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Diffstat (limited to 'libX11/specs/i18n/trans/trans.xml')
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1 files changed, 1979 insertions, 1979 deletions
diff --git a/libX11/specs/i18n/trans/trans.xml b/libX11/specs/i18n/trans/trans.xml index 61e2e7976..a61be65bc 100644 --- a/libX11/specs/i18n/trans/trans.xml +++ b/libX11/specs/i18n/trans/trans.xml @@ -1,1979 +1,1979 @@ -<?xml version="1.0" encoding="UTF-8" ?> -<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN" - "http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd"> - -<book id="trans"> - -<bookinfo> - <title>The XIM Transport Specification</title> - <subtitle>Revision 0.1</subtitle> - <releaseinfo>X Version 11, Release 7</releaseinfo> - <authorgroup> - <author> - <firstname>Takashi</firstname><surname>Fujiwara</surname> - <affiliation><orgname>FUJITSU LIMITED</orgname></affiliation> - </author> - </authorgroup> - <copyright><year>1994</year><holder>FUJITSU LIMITED</holder></copyright> - <copyright><year>1994</year><holder>X Consortium</holder></copyright> - - <productnumber>Revision 0.1</productnumber> - - -<abstract> -<para> -This specification describes the transport layer interfaces between Xlib and IM Server, -which makes various channels usable such as X protocol or TCP/IP, DECnet and etc. -</para> -</abstract> - -<legalnotice> - -<para> -Permission is hereby granted, free of charge, to any person obtaining a copy -of this software and associated documentation files -(the “Software”), to deal in the Software without restriction, -including without limitation the rights to use, copy, modify, merge, publish, -distribute, sublicense, and/or sell copies of the Software, and to permit -persons to whom the Software is furnished to do so, subject to the following -conditions: -</para> - -<para> -The above copyright notice and this permission notice shall be included in all -copies or substantial portions of the Software. -</para> - -<para> -THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, -EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF -MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN -NO EVENT SHALL THE X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -THE SOFTWARE. -</para> - -<para> -Except as contained in this notice, the name of The Open Group shall not -be used in advertising or otherwise to promote the sale, use or other dealings -in this Software without prior written authorization from X Consortium. -</para> - -<para>X Window System is a trademark of The Open Group.</para> - -</legalnotice> -</bookinfo> - -<chapter id="xim_transport_specification"> -<title>X Transport Specification</title> - -<sect1 id="Introduction"> -<title>Introduction</title> -<!-- .XS --> -<!-- (SN Introduction --> -<!-- .XE --> -<para> -<!-- .LP --> -The Xlib XIM implementation is layered into three functions, a protocol -layer, an interface layer and a transport layer. The purpose of this -layering is to make the protocol independent of transport implementation. -Each function of these layers are: -<!-- .RS 3 --> -</para> -<variablelist> - <varlistentry> - <term><emphasis>The protocol layer</emphasis></term> - <listitem> - <para> -implements overall function of XIM and calls the interface layer -functions when it needs to communicate to IM Server. - </para> - </listitem> - </varlistentry> - <varlistentry> - <term><emphasis>The interface layer</emphasis></term> - <listitem> - <para> -separates the implementation of the transport layer from the protocol -layer, in other words, it provides implementation independent hook for -the transport layer functions. - </para> - </listitem> - </varlistentry> - - <varlistentry> - <term><emphasis>The transport layer</emphasis></term> - <listitem> - <para> -handles actual data communication with IM Server. It is done by a set -of several functions named transporters. - </para> - </listitem> - </varlistentry> -</variablelist> - -<para> -This specification describes the interface layer and the transport -layer, which makes various communication channels usable such as -X protocol or, TCP/IP, DECnet, STREAM, etc., and provides -the information needed for adding another new transport layer. -In addition, sample implementations for the transporter using the -X connection is described in section 4. <!-- xref --> -</para> -</sect1> - -<sect1 id="Initialization"> -<title>Initialization</title> - -<sect2 id="Registering_structure_to_initialize"> -<title>Registering structure to initialize</title> - -<para> -The structure typed as TransportSW contains the list of the transport -layer the specific implementations supports. -</para> - -<literallayout class="monospaced"> -typedef struct { - char *transport_name; - Bool (*config); -} TransportSW; -</literallayout> - -<informaltable frame="none"> - <tgroup cols="2"> - <colspec colname="col1" colwidth="1*" colsep="0"/> - <colspec colname="col2" colwidth="1*" colsep="0"/> - <tbody> - <row rowsep="0"> - <entry><emphasis>transport_name</emphasis></entry> - <entry>name of transport<footnote><para>Refer to "The Input Method Protocol: Appendix B</para></footnote></entry> - </row> - <row rowsep="0"> - <entry><emphasis>config</emphasis></entry> - <entry>initial configuration function</entry> - </row> - </tbody> - </tgroup> -</informaltable> - -<para> -A sample entry for the Xlib supporting transporters is shown below: -</para> - -<literallayout class="monospaced"> -TransportSW _XimTransportRec[] = { -/* char <emphasis remap='I'>*</emphasis>: - * transport_name, Bool <emphasis remap='I'>(*config)()</emphasis> - */ - "X", _XimXConf, - "tcp", _XimTransConf, - "local", _XimTransConf, - "decnet", _XimTransConf, - "streams", _XimTransConf, - (char *)NULL, (Bool (*)())NULL, -}; -</literallayout> - -</sect2> -<sect2 id="Initialization_function"> -<title>Initialization function</title> -<!-- .XS --> -<!-- (SN Initialization function --> -<!-- .XE --> -<para> -The following function will be called once when Xlib configures the -transporter functions. -</para> - -<funcsynopsis> -<funcprototype> - <funcdef>Bool <function>(*config)</function></funcdef> - <paramdef>XIM<parameter> im</parameter></paramdef> - <paramdef>char<parameter> *transport_data</parameter></paramdef> -</funcprototype> -</funcsynopsis> - -<variablelist> - <varlistentry> - <term> - <emphasis remap='I'>im</emphasis> - </term> - <listitem> - <para> -Specifies XIM structure address. - </para> - </listitem> - </varlistentry> - <varlistentry> - <term> - <emphasis remap='I'>transport_data</emphasis> - </term> - <listitem> - <para> -Specifies the data specific to the transporter, in IM Server address.<footnote><para>Refer to "The Input Method Protocol: Appendix B</para></footnote> - </para> - </listitem> - </varlistentry> -</variablelist> - -<para> -This function must setup the transporter function pointers. -</para> - -<para> -<!-- .LP --> -The actual <emphasis remap='I'>config</emphasis> function will be chosen by IM Server at the -pre-connection time, matching by the <emphasis remap='I'>transport_name</emphasis> specified -in the <function>_XimTransportRec</function> array; The specific members of XimProto -structure listed below must be initialized so that point they -appropriate transporter functions. -</para> - -<para> -If the specified transporter has been configured successfully, this -function returns True. There is no Alternative Entry for config -function itself. -</para> - -<para> -The structure XimProto contains the following function pointers: -</para> - -<literallayout class="monospaced"> -Bool (*connect)(); /* Open connection */ -Bool (*shutdown)(); /* Close connection */ -Bool (*write)(); /* Write data */ -Bool (*read)(); /* Read data */ -Bool (*flush)(); /* Flush data buffer */ -Bool (*register_dispatcher)(); /* Register asynchronous data handler */ -Bool (*call_dispatcher)(); /* Call dispatcher */ -</literallayout> - -<para> -These functions are called when Xlib needs to communicate the -IM Server. These functions must process the appropriate procedure -described below. -</para> - -</sect2> -</sect1> -<sect1 id="The_interface_transport_layer_functions"> -<title>The interface/transport layer functions</title> -<para> -Following functions are used for the transport interface. -</para> - -<table frame="all" id="transport_layer_functions_2"> - <title>The Transport Layer Functions</title> - <tgroup cols="3"> - <colspec colname="col1" colwidth="3*" colsep="1"/> - <colspec colname="col2" colwidth="3*" colsep="1"/> - <colspec colname="col3" colwidth="1*" colsep="1"/> - <thead> - <row> - <entry align="center">Alternate Entry (Interface Layer)</entry> - <entry align="center">XimProto member (Transport Layer)</entry> - <entry align="center">Section</entry> - </row> - </thead> - <tbody> - <row> - <entry>_XimConnect</entry> - <entry>connect</entry> - <entry>3.1</entry> - </row> - <row> - <entry>_XimShutdown</entry> - <entry>shutdown</entry> - <entry>3.2</entry> - </row> - <row> - <entry>_XimWrite</entry> - <entry>write</entry> - <entry>3.3</entry> - </row> - <row> - <entry>_XimRead</entry> - <entry>read</entry> - <entry>3.4</entry> - </row> - <row> - <entry>_XimFlush</entry> - <entry>flush</entry> - <entry>3.5</entry> - </row> - <row> - <entry>_XimRegisterDispatcher</entry> - <entry>register_dispatcher</entry> - <entry>3.6</entry> - </row> - <row> - <entry>_XimCallDispatcher</entry> - <entry>call_dispatcher</entry> - <entry>3.7</entry> - </row> - </tbody> - </tgroup> -</table> - -<para> -The Protocol layer calls the above functions using the Alternative -Entry in the left column. The transport implementation defines -XimProto member function in the right column. The Alternative Entry is -provided so as to make easier to implement the Protocol Layer. -</para> - -<sect2 id="Opening_connection"> -<title>Opening connection</title> -<para> -<!-- .LP --> -When <function>XOpenIM</function> is called, the following function is called to connect -with the IM Server. -</para> - -<funcsynopsis> -<funcprototype> - <funcdef>Bool <function>(*connect)</function></funcdef> - <paramdef>XIM<parameter> im</parameter></paramdef> -</funcprototype> -</funcsynopsis> - -<variablelist> - <varlistentry> - <term> - <emphasis remap='I'>im</emphasis> - </term> - <listitem> - <para> -Specifies XIM structure address. - </para> - </listitem> - </varlistentry> -</variablelist> - -<para> -This function must establishes the connection to the IM Server. If the -connection is established successfully, this function returns True. -The Alternative Entry for this function is: -</para> - -<funcsynopsis id='_ximconnect'> -<funcprototype> - <funcdef>Bool <function> _XimConnect</function></funcdef> - <paramdef>XIM<parameter> im</parameter></paramdef> -</funcprototype> -</funcsynopsis> - -<variablelist> - <varlistentry> - <term> - <emphasis remap='I'>im</emphasis> - </term> - <listitem> - <para> -Specifies XIM structure address. - </para> - </listitem> - </varlistentry> -</variablelist> -</sect2> - -<sect2 id="Closing_connection"> -<title>Closing connection</title> -<!-- .XS --> -<!-- (SN Closing connection --> -<!-- .XE --> -<para> -<!-- .LP --> -When <function>XCloseIM</function> is called, the following function is called to -disconnect the connection with the IM Server. The Alternative Entry -for this function is: -</para> - -<funcsynopsis> -<funcprototype> - <funcdef>Bool <function> (*shutdown)</function></funcdef> - <paramdef>XIM<parameter> im</parameter></paramdef> -</funcprototype> -</funcsynopsis> - -<variablelist> - <varlistentry> - <term> - <emphasis remap='I'>im</emphasis> - </term> - <listitem> - <para> -Specifies XIM structure address. - </para> - </listitem> - </varlistentry> -</variablelist> - -<para> -<!-- .LP --> -This function must close connection with the IM Server. If the -connection is closed successfully, this function returns True. The -Alternative Entry for this function is: -</para> - -<funcsynopsis id='_ximshutdown'> -<funcprototype> - <funcdef>Bool <function>_XimShutdown</function></funcdef> - <paramdef>XIM<parameter> im</parameter></paramdef> -</funcprototype> -</funcsynopsis> - -<variablelist> - <varlistentry> - <term> - <emphasis remap='I'>im</emphasis> - </term> - <listitem> - <para> -Specifies XIM structure address. - </para> - </listitem> - </varlistentry> -</variablelist> - -</sect2> - -<sect2 id="Writing_data"> -<title>Writing data</title> -<para> -The following function is called, when Xlib needs to write data to the -IM Server. -</para> - -<funcsynopsis id='_ximwrite'> -<funcprototype> - <funcdef>Bool <function> _XimWrite</function></funcdef> - <paramdef>XIM<parameter> im</parameter></paramdef> - <paramdef>INT16<parameter> len</parameter></paramdef> - <paramdef>XPointer<parameter> data</parameter></paramdef> -</funcprototype> -</funcsynopsis> - -<variablelist> - <varlistentry> - <term> - <emphasis remap='I'>im</emphasis> - </term> - <listitem> - <para> -Specifies XIM structure address. - </para> - </listitem> - </varlistentry> - <varlistentry> - <term> - <emphasis remap='I'>len</emphasis> - </term> - <listitem> - <para> -Specifies the length of writing data. - </para> - </listitem> - </varlistentry> - <varlistentry> - <term> - <emphasis remap='I'>data</emphasis> - </term> - <listitem> - <para> -Specifies the writing data. - </para> - </listitem> - </varlistentry> -</variablelist> - -<para> -This function writes the <emphasis remap='I'>data</emphasis> to the IM Server, regardless -of the contents. The number of bytes is passed to <emphasis remap='I'>len</emphasis>. The -writing data is passed to <emphasis remap='I'>data</emphasis>. If data is sent successfully, -the function returns True. Refer to "The Input Method Protocol" for -the contents of the writing data. The Alternative Entry for this -function is: -</para> - -<funcsynopsis> -<funcprototype> - <funcdef>Bool <function>_XimWrite</function></funcdef> - <paramdef>XIM<parameter> im</parameter></paramdef> - <paramdef>INT16<parameter> len</parameter></paramdef> - <paramdef>XPointer<parameter> data</parameter></paramdef> -</funcprototype> -</funcsynopsis> - -<variablelist> - <varlistentry> - <term> - <emphasis remap='I'>im</emphasis> - </term> - <listitem> - <para> -Specifies XIM structure address. - </para> - </listitem> - </varlistentry> - <varlistentry> - <term> - <emphasis remap='I'>len</emphasis> - </term> - <listitem> - <para> -Specifies the length of writing data. - </para> - </listitem> - </varlistentry> - <varlistentry> - <term> - <emphasis remap='I'>data</emphasis> - </term> - <listitem> - <para> -Specifies the writing data. - </para> - </listitem> - </varlistentry> -</variablelist> - -</sect2> -<sect2 id="Reading_data"> -<title>Reading data</title> -<para> -The following function is called when Xlib waits for response from IM -server synchronously. -</para> - -<funcsynopsis id='_ximread'> -<funcprototype> - <funcdef>Bool <function> _XimRead</function></funcdef> - <paramdef>XIM<parameter> im</parameter></paramdef> - <paramdef>XPointer<parameter> read_buf</parameter></paramdef> - <paramdef>int<parameter> buf_len</parameter></paramdef> - <paramdef>int<parameter> *ret_len</parameter></paramdef> -</funcprototype> -</funcsynopsis> - -<variablelist> - <varlistentry> - <term> - <emphasis remap='I'>im</emphasis> - </term> - <listitem> - <para> -Specifies XIM structure address. - </para> - </listitem> - </varlistentry> - <varlistentry> - <term> - <emphasis remap='I'>read_buf</emphasis> - </term> - <listitem> - <para> -Specifies the buffer to store data. - </para> - </listitem> - </varlistentry> - <varlistentry> - <term> - <emphasis remap='I'>buf_len</emphasis> - </term> - <listitem> - <para> -Specifies the size of the <emphasis remap='I'>buffer</emphasis> - </para> - </listitem> - </varlistentry> - <varlistentry> - <term> - <emphasis remap='I'>ret_len</emphasis> - </term> - <listitem> - <para> -Specifies the length of stored data. - </para> - </listitem> - </varlistentry> -</variablelist> - -<para> -This function stores the read data in <emphasis remap='I'>read_buf</emphasis>, which size is -specified as <emphasis remap='I'>buf_len</emphasis>. The size of data is set to <emphasis remap='I'>ret_len</emphasis>. -This function return True, if the data is read normally or reading -data is completed. -</para> -<para> -The Alternative Entry for this function is: -</para> - -<funcsynopsis> -<funcprototype> - <funcdef>Bool <function> _XimRead</function></funcdef> - <paramdef>XIM<parameter> im</parameter></paramdef> - <paramdef>INT16<parameter> *ret_len</parameter></paramdef> - <paramdef>XPointer<parameter> buf</parameter></paramdef> - <paramdef>int<parameter> buf_len</parameter></paramdef> - <paramdef>Bool<parameter> (*predicate)()</parameter></paramdef> - <paramdef>XPointer<parameter> predicate_arg</parameter></paramdef> -</funcprototype> -</funcsynopsis> - -<variablelist> - <varlistentry> - <term> - <emphasis remap='I'>im</emphasis> - </term> - <listitem> - <para> -Specifies XIM structure address. - </para> - </listitem> - </varlistentry> - <varlistentry> - <term> - <emphasis remap='I'>ret_len</emphasis> - </term> - <listitem> - <para> -Specifies the size of the <emphasis remap='I'>data</emphasis> buffer. - </para> - </listitem> - </varlistentry> - <varlistentry> - <term> - <emphasis remap='I'>buf</emphasis> - </term> - <listitem> - <para> -Specifies the buffer to store data. - </para> - </listitem> - </varlistentry> - <varlistentry> - <term> - <emphasis remap='I'>buf_len</emphasis> - </term> - <listitem> - <para> -Specifies the length of <emphasis remap='I'>buffer</emphasis>. - </para> - </listitem> - </varlistentry> - <varlistentry> - <term> - <emphasis remap='I'>predicate</emphasis> - </term> - <listitem> - <para> -Specifies the predicate for the XIM data. - </para> - </listitem> - </varlistentry> - <varlistentry> - <term> - <emphasis remap='I'>predicate_arg</emphasis> - </term> - <listitem> - <para> -Specifies the predicate specific data. -<!-- .sp 6p --> - </para> - </listitem> - </varlistentry> -</variablelist> - -<para> -The predicate procedure indicates whether the <emphasis remap='I'>data</emphasis> is for the -XIM or not. <emphasis remap='I'>len</emphasis> -This function stores the read data in <emphasis remap='I'>buf</emphasis>, which size -is specified as <emphasis remap='I'>buf_len</emphasis>. The size of data is set to -<emphasis remap='I'>ret_len</emphasis>. If <emphasis remap='I'>preedicate()</emphasis> -returns True, this function returns True. If not, it calls the registered callback function. -</para> - -<para> -The procedure and its arguments are: -</para> - - -<funcsynopsis> -<funcprototype> - <funcdef>void <function>(*predicate)</function></funcdef> - <paramdef>XIM<parameter> im</parameter></paramdef> - <paramdef>INT16<parameter> len</parameter></paramdef> - <paramdef>XPointer<parameter> data</parameter></paramdef> - <paramdef>XPointer<parameter> predicate_arg</parameter></paramdef> -</funcprototype> -</funcsynopsis> - -<variablelist> - <varlistentry> - <term> - <emphasis remap='I'>im</emphasis> - </term> - <listitem> - <para> -Specifies XIM structure address. - </para> - </listitem> - </varlistentry> - <varlistentry> - <term> - <emphasis remap='I'>len</emphasis> - </term> - <listitem> - <para> -Specifies the size of the <emphasis remap='I'>data</emphasis> buffer. - </para> - </listitem> - </varlistentry> - <varlistentry> - <term> - <emphasis remap='I'>data</emphasis> - </term> - <listitem> - <para> -Specifies the buffer to store data. - </para> - </listitem> - </varlistentry> - <varlistentry> - <term> - <emphasis remap='I'>predicate_arg</emphasis> - </term> - <listitem> - <para> -Specifies the predicate specific data. - </para> - </listitem> - </varlistentry> -</variablelist> - -</sect2> -<sect2 id="Flushing_buffer"> -<title>Flushing buffer</title> -<para> -The following function is called when Xlib needs to flush the data. -</para> - -<funcsynopsis> -<funcprototype> - <funcdef>void <function>(*flush)</function></funcdef> - <paramdef>XIM<parameter> im</parameter></paramdef> -</funcprototype> -</funcsynopsis> - -<variablelist> - <varlistentry> - <term> - <emphasis remap='I'>im</emphasis> - </term> - <listitem> - <para> -Specifies XIM structure address. - </para> - </listitem> - </varlistentry> -</variablelist> - -<para> -This function must flush the data stored in internal buffer on the -transport layer. If data transfer is completed, the function returns -True. The Alternative Entry for this function is: -</para> - -<funcsynopsis id='_ximflush'> -<funcprototype> - <funcdef>void <function> _XimFlush</function></funcdef> - <paramdef>XIM<parameter> im</parameter></paramdef> -</funcprototype> -</funcsynopsis> - -<variablelist> - <varlistentry> - <term> - <emphasis remap='I'>im</emphasis> - </term> - <listitem> - <para> -Specifies XIM structure address. - </para> - </listitem> - </varlistentry> -</variablelist> - -</sect2> -<sect2 id="Registering_asynchronous_data_handler"> -<title>Registering asynchronous data handler</title> -<para> -Xlib needs to handle asynchronous response from IM Server. This is -because some of the XIM data occur asynchronously to X events. -</para> - -<para> -Those data will be handled in the <emphasis remap='I'>Filter</emphasis>, -and the <emphasis remap='I'>Filter</emphasis> -will call asynchronous data handler in the protocol layer. Then it -calls dispatchers in the transport layer. The dispatchers are -implemented by the protocol layer. This function must store the -information and prepare for later call of the dispatchers using -<function>_XimCallDispatcher</function>. -</para> - -<para> -When multiple dispatchers are registered, they will be called -sequentially in order of registration, on arrival of asynchronous -data. The register_dispatcher is declared as following: -</para> - -<funcsynopsis> -<funcprototype> - <funcdef>Bool <function>(*register_dispatcher)</function></funcdef> - <paramdef>XIM<parameter> im</parameter></paramdef> - <paramdef>Bool<parameter> (*dispatcher)()</parameter></paramdef> - <paramdef>XPointer<parameter> call_data</parameter></paramdef> -</funcprototype> -</funcsynopsis> - -<variablelist> - <varlistentry> - <term> - <emphasis remap='I'>im</emphasis> - </term> - <listitem> - <para> -Specifies XIM structure address. - </para> - </listitem> - </varlistentry> - <varlistentry> - <term> - <emphasis remap='I'>dispatcher</emphasis> - </term> - <listitem> - <para> -Specifies the dispatcher function to register. - </para> - </listitem> - </varlistentry> - <varlistentry> - <term> - <emphasis remap='I'>call_data</emphasis> - </term> - <listitem> - <para> -Specifies a parameter for the <emphasis remap='I'>dispatcher</emphasis>. - </para> - </listitem> - </varlistentry> -</variablelist> - -<para> -The dispatcher is a function of the following type: -</para> - -<funcsynopsis> -<funcprototype> - <funcdef>Bool <function>(*dispatcher)</function></funcdef> - <paramdef>XIM<parameter> im</parameter></paramdef> - <paramdef>INT16<parameter> len</parameter></paramdef> - <paramdef>XPointer<parameter> data</parameter></paramdef> - <paramdef>XPointer<parameter> call_data</parameter></paramdef> -</funcprototype> -</funcsynopsis> - -<variablelist> - <varlistentry> - <term> - <emphasis remap='I'>im</emphasis> - </term> - <listitem> - <para> -Specifies XIM structure address. - </para> - </listitem> - </varlistentry> - <varlistentry> - <term> - <emphasis remap='I'>len</emphasis> - </term> - <listitem> - <para> -Specifies the size of the <emphasis remap='I'>data</emphasis> buffer. - </para> - </listitem> - </varlistentry> - <varlistentry> - <term> - <emphasis remap='I'>data</emphasis> - </term> - <listitem> - <para> -Specifies the buffer to store data. - </para> - </listitem> - </varlistentry> - <varlistentry> - <term> - <emphasis remap='I'>call_data</emphasis> - </term> - <listitem> - <para> -Specifies a parameter passed to the register_dispatcher. - </para> - </listitem> - </varlistentry> -</variablelist> - -<para> -The dispatcher is provided by the protocol layer. They are called once -for every asynchronous data, in order of registration. If the data is -used, it must return True. otherwise, it must return False. -</para> - -<para> -If the dispatcher function returns True, the Transport Layer assume -that the data has been processed by the upper layer. The Alternative -Entry for this function is: -</para> - -<funcsynopsis id='_ximregisterdispatcher'> -<funcprototype> - <funcdef>Bool <function> _XimRegisterDispatcher</function></funcdef> - <paramdef>XIM<parameter> im</parameter></paramdef> - <paramdef>Bool<parameter> (*dispatcher)()</parameter></paramdef> - <paramdef>XPointer<parameter> call_data</parameter></paramdef> -</funcprototype> -</funcsynopsis> - -<variablelist> - <varlistentry> - <term> - <emphasis remap='I'>im</emphasis> - </term> - <listitem> - <para> -Specifies XIM structure address. - </para> - </listitem> - </varlistentry> - <varlistentry> - <term> - <emphasis remap='I'>dispatcher</emphasis> - </term> - <listitem> - <para> -Specifies the dispatcher function to register. - </para> - </listitem> - </varlistentry> - <varlistentry> - <term> - <emphasis remap='I'>call_data</emphasis> - </term> - <listitem> - <para> -Specifies a parameter for the <emphasis remap='I'>dispatcher</emphasis>. - </para> - </listitem> - </varlistentry> -</variablelist> - -</sect2> -<sect2 id="Calling_dispatcher"> -<title>Calling dispatcher</title> -<para> -The following function is used to call the registered dispatcher -function, when the asynchronous response from IM Server has arrived. -</para> - -<funcsynopsis> -<funcprototype> - <funcdef>Bool <function>(*call_dispatcher)</function></funcdef> - <paramdef>XIM<parameter> im</parameter></paramdef> - <paramdef>INT16<parameter> len</parameter></paramdef> - <paramdef>XPointer<parameter> data</parameter></paramdef> -</funcprototype> -</funcsynopsis> - -<variablelist> - <varlistentry> - <term> - <emphasis remap='I'>im</emphasis> - </term> - <listitem> - <para> -Specifies XIM structure address. - </para> - </listitem> - </varlistentry> - <varlistentry> - <term> - <emphasis remap='I'>len</emphasis> - </term> - <listitem> - <para> -Specifies the size of <emphasis remap='I'>data</emphasis> buffer. - </para> - </listitem> - </varlistentry> - <varlistentry> - <term> - <emphasis remap='I'>data</emphasis> - </term> - <listitem> - <para> -Specifies the buffer to store data. - </para> - </listitem> - </varlistentry> -</variablelist> - -<para> -The call_dispatcher must call the dispatcher function, in order of -their registration. <emphasis remap='I'>len</emphasis> and <emphasis remap='I'>data</emphasis> are the data passed to -register_dispatcher. -</para> - -<para> -The return values are checked at each invocation, and if it finds -True, it immediately return with true for its return value. -</para> - -<para> -It is depend on the upper layer whether the read data is XIM -Protocol packet unit or not. -The Alternative Entry for this function is: -</para> - -<funcsynopsis id='_ximcalldispatcher'> -<funcprototype> - <funcdef>Bool <function> _XimCallDispatcher</function></funcdef> - <paramdef>XIM<parameter> im</parameter></paramdef> - <paramdef>INT16<parameter> len</parameter></paramdef> - <paramdef>XPointer<parameter> call_data</parameter></paramdef> -</funcprototype> -</funcsynopsis> - -</sect2> -</sect1> -<sect1 id="Sample_implementations_for_the_Transport_Layer"> -<title>Sample implementations for the Transport Layer</title> -<para> -Sample implementations for the transporter using the X connection is -described here. -</para> - -<sect2 id="X_Transport"> -<title>X Transport</title> -<para> -At the beginning of the X Transport connection for the XIM transport -mechanism, two different windows must be created either in an Xlib XIM -or in an IM Server, with which the Xlib and the IM Server exchange the -XIM transports by using the ClientMessage events and Window Properties. -In the following, the window created by the Xlib is referred as the -"client communication window", and on the other hand, the window created -by the IM Server is referred as the "IMS communication window". -</para> - -<sect3 id="Connection"> -<title>Connection</title> -<para> -In order to establish a connection, a communication window is created. -A ClientMessage in the following event's format is sent to the owner -window of XIM_SERVER selection, which the IM Server has created. -</para> - -<para> -<!-- .LP --> -Refer to "The Input Method Protocol" for the XIM_SERVER atom. -</para> - -<table frame="none" id="transport_layer_functions"> - <title>The ClientMessage sent to the IMS window.</title> - <tgroup cols="3"> - <colspec colname="col1" colwidth="1*" colsep="0"/> - <colspec colname="col2" colwidth="1*" colsep="1"/> - <colspec colname="col3" colwidth="3.5*" colsep="0"/> - <spanspec namest="col1" nameend="col2" spanname="span-horiz" align="left"/> - <thead> - <row> - <entry align="left" spanname="span-horiz">Structure Member</entry> - <entry align="left">Contents</entry> - </row> - </thead> - <tbody> - <row rowsep="0"> - <entry>int</entry> - <entry>type</entry> - <entry>ClientMessage</entry> - </row> - <row rowsep="0"> - <entry>u_long</entry> - <entry>serial</entry> - <entry>Set by the X Window System</entry> - </row> - <row rowsep="0"> - <entry>Bool</entry> - <entry>send_event</entry> - <entry>Set by the X Window System</entry> - </row> - <row rowsep="0"> - <entry>Display</entry> - <entry>*display</entry> - <entry>The display to which connects</entry> - </row> - <row rowsep="0"> - <entry>Window</entry> - <entry>window</entry> - <entry>IMS Window ID</entry> - </row> - <row rowsep="0"> - <entry>Atom</entry> - <entry>message_type</entry> - <entry>XInternAtom(display, "_XIM_CONNECT", false)</entry> - </row> - <row rowsep="0"> - <entry>int</entry> - <entry>format</entry> - <entry>32</entry> - </row> - <row rowsep="0"> - <entry>long</entry> - <entry>data.1[0]</entry> - <entry>client communication window ID</entry> - </row> - <row rowsep="0"> - <entry>long</entry> - <entry>data.1[1]</entry> - <entry>client-major-transport-version(*1)</entry> - </row> - <row rowsep="0"> - <entry>long</entry> - <entry>data.1[2]</entry> - <entry>client-major-transport-version(*1)</entry> - </row> - </tbody> - </tgroup> -</table> - -<para> -In order to establish the connection (to notify the IM Server communication -window), the IM Server sends a ClientMessage in the following event's -format to the client communication window. -</para> - -<table frame="none" id="clientmessage_sent_by_im_server"> - <title>The ClientMessage sent by IM Server.</title> - <tgroup cols="3"> - <colspec colname="col1" colwidth="1*" colsep="0"/> - <colspec colname="col2" colwidth="1*" colsep="1"/> - <colspec colname="col3" colwidth="3.5*" colsep="0"/> - <spanspec namest="col1" nameend="col2" spanname="span-horiz" align="left"/> - <thead> - <row> - <entry align="left" spanname="span-horiz">Structure Member</entry> - <entry align="left">Contents</entry> - </row> - </thead> - <tbody> - <row rowsep="0"> - <entry>int</entry> - <entry>type</entry> - <entry>ClientMessage</entry> - </row> - <row rowsep="0"> - <entry>u_long</entry> - <entry>serial</entry> - <entry>Set by the X Window System</entry> - </row> - <row rowsep="0"> - <entry>Bool</entry> - <entry>send_event</entry> - <entry>Set by the X Window System</entry> - </row> - <row rowsep="0"> - <entry>Display</entry> - <entry>*display</entry> - <entry>The display to which connects</entry> - </row> - <row rowsep="0"> - <entry>Window</entry> - <entry>window</entry> - <entry>IMS Window ID</entry> - </row> - <row rowsep="0"> - <entry>Atom</entry> - <entry>message_type</entry> - <entry>XInternAtom(display, "_XIM_CONNECT", false)</entry> - </row> - <row rowsep="0"> - <entry>int</entry> - <entry>format</entry> - <entry>32</entry> - </row> - <row rowsep="0"> - <entry>long</entry> - <entry>data.1[0]</entry> - <entry>client communication window ID</entry> - </row> - <row rowsep="0"> - <entry>long</entry> - <entry>data.1[1]</entry> - <entry>client-major-transport-version(*1)</entry> - </row> - <row rowsep="0"> - <entry>long</entry> - <entry>data.1[2]</entry> - <entry>client-major-transport-version(*1)</entry> - </row> - <row rowsep="0"> - <entry>long</entry> - <entry>data.1[3]</entry> - <entry>dividing size between ClientMessage and Property(*2)</entry> - </row> - </tbody> - </tgroup> -</table> - -<para> -(*1) major/minor-transport-version -</para> - -<para> -The read/write method is decided by the combination of -major/minor-transport-version, as follows: -</para> - -<table frame="all" id="readwrite_method_and_the_majorminor_transport_version"> -<title>The read/write method and the major/minor-transport-version</title> - <tgroup cols="3"> - <colspec colname="col1" colwidth="1*" colsep="1"/> - <colspec colname="col2" colwidth="1*" colsep="1"/> - <colspec colname="col3" colwidth="3*" colsep="1"/> - <spanspec namest="col1" nameend="col2" spanname="span-horiz" align="center"/> - <thead> - <row> - <entry spanname="span-horiz">Transport-version</entry> - <entry>read/write</entry> - </row> - <row> - <entry>major</entry> - <entry>minor</entry> - <entry></entry> - </row> - </thead> - <tbody> - <row rowsep="0"> - <entry morerows="2">0</entry> - <entry>0</entry> - <entry>only-CM & Property-with-CM</entry> - </row> - <row rowsep="0"> - <entry>1</entry> - <entry>only-CM & multi-CM</entry> - </row> - <row rowsep="1"> - <entry>2</entry> - <entry>only-CM & multi-CM & Property-with-CM</entry> - </row> - <row rowsep="1"> - <entry>1</entry> - <entry>0</entry> - <entry>PropertyNotify</entry> - </row> - <row rowsep="0"> - <entry morerows="1">2</entry> - <entry>0</entry> - <entry>only-CM & PropertyNotify</entry> - </row> - <row> - <entry>1</entry> - <entry>only-CM & multi-CM & PropertyNotify</entry> - </row> - </tbody> - </tgroup> -</table> - -<literallayout class="monospaced"> -only-CM : data is sent via a ClientMessage -multi-CM : data is sent via multiple ClientMessages -Property-with-CM : data is written in Property, and its Atom - is send via ClientMessage -PropertyNotify : data is written in Property, and its Atom - is send via PropertyNotify - -</literallayout> - - -<para> -The method to decide major/minor-transport-version is as follows: -</para> - -<itemizedlist> - <listitem> - <para> -The client sends 0 as major/minor-transport-version to the IM Server. -The client must support all methods in Table 4-3. <!-- xref --> -The client may send another number as major/minor-transport-version to -use other method than the above in the future. - </para> - </listitem> - <listitem> - <para> -The IM Server sends its major/minor-transport-version number to -the client. The client sends data using the method specified by the -IM Server. - </para> - </listitem> - <listitem> - <para> -If major/minor-transport-version number is not available, it is regarded -as 0. - </para> - </listitem> -</itemizedlist> - -<para> -(*2) dividing size between ClientMessage and Property -</para> - -<para> -If data is sent via both of multi-CM and Property, specify the dividing -size between ClientMessage and Property. The data, which is smaller than -this size, is sent via multi-CM (or only-CM), and the data, which is -lager than this size, is sent via Property. -</para> - -</sect3> - -<sect3 id="read_write_"> -<title>read/write </title> -<para> -The data is transferred via either ClientMessage or Window Property in -the X Window System. -</para> - -<sect4 id="Format_for_the_data_from_the_Client_to_the_IM_Server"> -<title>Format for the data from the Client to the IM Server</title> -<para> -<emphasis role="bold">ClientMessage</emphasis> -</para> - -<para> -If data is sent via ClientMessage event, the format is as follows: -</para> - -<table frame="none" id="clientmessage_events_format_first_or_middle"> - <title>The ClientMessage event's format (first or middle)</title> - <tgroup cols="3"> - <colspec colname="col1" colwidth="1*" colsep="0"/> - <colspec colname="col2" colwidth="1*" colsep="1"/> - <colspec colname="col3" colwidth="3.5*" colsep="0"/> - <spanspec namest="col1" nameend="col2" spanname="span-horiz" align="left"/> - <thead> - <row> - <entry align="left" spanname="span-horiz">Structure Member</entry> - <entry align="left">Contents</entry> - </row> - </thead> - <tbody> - <row rowsep="0"> - <entry>int</entry> - <entry>type</entry> - <entry>ClientMessage</entry> - </row> - <row rowsep="0"> - <entry>u_long</entry> - <entry>serial</entry> - <entry>Set by the X Window System</entry> - </row> - <row rowsep="0"> - <entry>Bool</entry> - <entry>send_event</entry> - <entry>Set by the X Window System</entry> - </row> - <row rowsep="0"> - <entry>Display</entry> - <entry>*display</entry> - <entry>The display to which connects</entry> - </row> - <row rowsep="0"> - <entry>Window</entry> - <entry>window</entry> - <entry>IMS Window ID</entry> - </row> - <row rowsep="0"> - <entry>Atom</entry> - <entry>message_type</entry> - <entry>XInternAtom(display, "_XIM_MOREDATA", False)</entry> - </row> - <row rowsep="0"> - <entry>int</entry> - <entry>format</entry> - <entry>8</entry> - </row> - <row rowsep="0"> - <entry>char</entry> - <entry>data.b[20]</entry> - <entry>(read/write DATA : 20 byte)</entry> - </row> - </tbody> - </tgroup> -</table> - - - -<table frame="none" id="clientmessage_events_format_only_or_last"> - <title>The ClientMessage event's format (only or last)</title> - <tgroup cols="3"> - <colspec colname="col1" colwidth="1*" colsep="0"/> - <colspec colname="col2" colwidth="1*" colsep="1"/> - <colspec colname="col3" colwidth="3.5*" colsep="0"/> - <spanspec namest="col1" nameend="col2" spanname="span-horiz" align="left"/> - <thead> - <row> - <entry align="left" spanname="span-horiz">Structure Member</entry> - <entry align="left">Contents</entry> - </row> - </thead> - <tbody> - <row rowsep="0"> - <entry>int</entry> - <entry>type</entry> - <entry>ClientMessage</entry> - </row> - <row rowsep="0"> - <entry>u_long</entry> - <entry>serial</entry> - <entry>Set by the X Window System</entry> - </row> - <row rowsep="0"> - <entry>Bool</entry> - <entry>send_event</entry> - <entry>Set by the X Window System</entry> - </row> - <row rowsep="0"> - <entry>Display</entry> - <entry>*display</entry> - <entry>The display to which connects</entry> - </row> - <row rowsep="0"> - <entry>Window</entry> - <entry>window</entry> - <entry>IMS Window ID</entry> - </row> - <row rowsep="0"> - <entry>Atom</entry> - <entry>message_type</entry> - <entry>XInternAtom(display, "_XIM_PROTOCOL", False)</entry> - </row> - <row rowsep="0"> - <entry>int</entry> - <entry>format</entry> - <entry>8</entry> - </row> - <row rowsep="0"> - <entry>char</entry> - <entry>data.b[20]</entry> - <entry>(read/write DATA : MAX 20 byte) -<footnote><para>If the data is smaller -than 20 bytes, all data other than available data must be 0. -</para></footnote> - </entry> - </row> - </tbody> - </tgroup> -</table> - -<para> -<emphasis role="bold">Property</emphasis> -</para> - -<para> -In the case of large data, data will be sent via the Window Property -for the efficiency. There are the following two methods to notify -Property, and transport-version is decided which method is used. -</para> - -<itemizedlist> - <listitem> - <para> -The XChangeProperty function is used to store data in the client -communication window, and Atom of the stored data is notified to the -IM Server via ClientMessage event. - </para> - </listitem> - <listitem> - <para> -The XChangeProperty function is used to store data in the client -communication window, and Atom of the stored data is notified to the -IM Server via PropertyNotify event. - </para> - </listitem> -</itemizedlist> - -<para> -The arguments of the XChangeProperty are as follows: -</para> - - -<table frame="none" id="xchangeproperty_events_format"> - <title>The XChangeProperty event's format</title> - <tgroup cols="3"> - <colspec colname="col1" colwidth="1*" colsep="0"/> - <colspec colname="col2" colwidth="1*" colsep="1"/> - <colspec colname="col3" colwidth="3.5*" colsep="0"/> - <spanspec namest="col1" nameend="col2" spanname="span-horiz" align="left"/> - <thead> - <row> - <entry align="left" spanname="span-horiz">Argument</entry> - <entry align="left">Contents</entry> - </row> - </thead> - <tbody> - <row rowsep="0"> - <entry>Display</entry> - <entry>*display</entry> - <entry>The display to which connects</entry> - </row> - <row rowsep="0"> - <entry>Window</entry> - <entry>window</entry> - <entry>IMS communication window ID</entry> - </row> - <row rowsep="0"> - <entry>Atom</entry> - <entry>property</entry> - <entry>read/write property Atom (*1)</entry> - </row> - <row rowsep="0"> - <entry>int</entry> - <entry>format</entry> - <entry>8</entry> - </row> - <row rowsep="0"> - <entry>int</entry> - <entry>mode</entry> - <entry>PropModeAppend</entry> - </row> - <row rowsep="0"> - <entry>u_char</entry> - <entry>*data</entry> - <entry>read/write DATA</entry> - </row> - <row rowsep="0"> - <entry>int</entry> - <entry>nelements</entry> - <entry>length of DATA</entry> - </row> - </tbody> - </tgroup> -</table> - -<para> -(*1) The read/write property ATOM allocates the following strings by -<function>XInternAtom</function>. -"_clientXXX" -</para> - -<para> -The client changes the property with the mode of PropModeAppend and -the IM Server will read it with the delete mode i.e. (delete = True). -</para> - -<para> -If Atom is notified via ClientMessage event, the format of the ClientMessage -is as follows: -</para> - -<table frame="none" id="clientmessage_events_format_to_send_atom_of_property"> - <title>The ClientMessage event's format to send Atom of property</title> - <tgroup cols="3"> - <colspec colname="col1" colwidth="1*" colsep="0"/> - <colspec colname="col2" colwidth="1*" colsep="1"/> - <colspec colname="col3" colwidth="3.5*" colsep="0"/> - <spanspec namest="col1" nameend="col2" spanname="span-horiz" align="left"/> - <thead> - <row> - <entry align="left" spanname="span-horiz">Structure Member</entry> - <entry align="left">Contents</entry> - </row> - </thead> - <tbody> - <row rowsep="0"> - <entry>int</entry> - <entry>type</entry> - <entry>ClientMessage</entry> - </row> - <row rowsep="0"> - <entry>u_long</entry> - <entry>serial</entry> - <entry>Set by the X Window System</entry> - </row> - <row rowsep="0"> - <entry>Bool</entry> - <entry>send_event</entry> - <entry>Set by the X Window System</entry> - </row> - <row rowsep="0"> - <entry>Display</entry> - <entry>*display</entry> - <entry>The display to which connects</entry> - </row> - <row rowsep="0"> - <entry>Window</entry> - <entry>window</entry> - <entry>IMS Window ID</entry> - </row> - <row rowsep="0"> - <entry>Atom</entry> - <entry>message_type</entry> - <entry>XInternAtom(display, "_XIM_PROTOCOL", False)</entry> - </row> - <row rowsep="0"> - <entry>int</entry> - <entry>format</entry> - <entry>8</entry> - </row> - <row rowsep="0"> - <entry>long</entry> - <entry>data.1[0]</entry> - <entry>length of read/write property Atom</entry> - </row> - <row rowsep="0"> - <entry>long</entry> - <entry>data.1[1]</entry> - <entry>read/write property Atom</entry> - </row> - </tbody> - </tgroup> -</table> -</sect4> - -<sect4 id="Format_for_the_data_from_the_IM_Server_to_the_Client"> -<title>Format for the data from the IM Server to the Client</title> -<para> -<emphasis role="bold">ClientMessage</emphasis> -</para> - -<para> -The format of the ClientMessage is as follows: -</para> - -<table frame="none" id="clientmessage_events_format_first_or_middle_2"> - <title>The ClientMessage event's format (first or middle)</title> - <tgroup cols="3"> - <colspec colname="col1" colwidth="1*" colsep="0"/> - <colspec colname="col2" colwidth="1*" colsep="1"/> - <colspec colname="col3" colwidth="3.5*" colsep="0"/> - <spanspec namest="col1" nameend="col2" spanname="span-horiz" align="left"/> - <thead> - <row> - <entry align="left" spanname="span-horiz">Structure Member</entry> - <entry align="left">Contents</entry> - </row> - </thead> - <tbody> - <row rowsep="0"> - <entry>int</entry> - <entry>type</entry> - <entry>ClientMessage</entry> - </row> - <row rowsep="0"> - <entry>u_long</entry> - <entry>serial</entry> - <entry>Set by the X Window System</entry> - </row> - <row rowsep="0"> - <entry>Bool</entry> - <entry>send_event</entry> - <entry>Set by the X Window System</entry> - </row> - <row rowsep="0"> - <entry>Display</entry> - <entry>*display</entry> - <entry>The display to which connects</entry> - </row> - <row rowsep="0"> - <entry>Window</entry> - <entry>window</entry> - <entry>IMS Window ID</entry> - </row> - <row rowsep="0"> - <entry>Atom</entry> - <entry>message_type</entry> - <entry>XInternAtom(display, "_XIM_MOREDATA", False)</entry> - </row> - <row rowsep="0"> - <entry>int</entry> - <entry>format</entry> - <entry>8</entry> - </row> - <row rowsep="0"> - <entry>char</entry> - <entry>data.b[20]</entry> - <entry>(read/write DATA : 20 byte)</entry> - </row> - </tbody> - </tgroup> -</table> - - - - - -<table frame="none" id="clientmessage_events_format_only_or_last_2"> - <title>The ClientMessage event's format (only or last)</title> - <tgroup cols="3"> - <colspec colname="col1" colwidth="1*" colsep="0"/> - <colspec colname="col2" colwidth="1*" colsep="1"/> - <colspec colname="col3" colwidth="3.5*" colsep="0"/> - <spanspec namest="col1" nameend="col2" spanname="span-horiz" align="left"/> - <thead> - <row> - <entry align="left" spanname="span-horiz">Structure Member</entry> - <entry align="left">Contents</entry> - </row> - </thead> - <tbody> - <row rowsep="0"> - <entry>int</entry> - <entry>type</entry> - <entry>ClientMessage</entry> - </row> - <row rowsep="0"> - <entry>u_long</entry> - <entry>serial</entry> - <entry>Set by the X Window System</entry> - </row> - <row rowsep="0"> - <entry>Bool</entry> - <entry>send_event</entry> - <entry>Set by the X Window System</entry> - </row> - <row rowsep="0"> - <entry>Display</entry> - <entry>*display</entry> - <entry>The display to which connects</entry> - </row> - <row rowsep="0"> - <entry>Window</entry> - <entry>window</entry> - <entry>IMS Window ID</entry> - </row> - <row rowsep="0"> - <entry>Atom</entry> - <entry>message_type</entry> - <entry>XInternAtom(display, "_XIM_PROTOCOL", False)</entry> - </row> - <row rowsep="0"> - <entry>int</entry> - <entry>format</entry> - <entry>8</entry> - </row> - <row rowsep="0"> - <entry>char</entry> - <entry>data.b[20]</entry> - <entry>(read/write DATA : MAX 20 byte) (*1)</entry> - </row> - </tbody> - </tgroup> -</table> - -<para> -(*1) If the data size is smaller than 20 bytes, all data other than available -data must be 0. -</para> - -<para> -<emphasis role="bold">Property</emphasis> -</para> - -<para> -In the case of large data, data will be sent via the Window Property -for the efficiency. There are the following two methods to notify -Property, and transport-version is decided which method is used. -</para> - -<itemizedlist> - <listitem> - <para> -The XChangeProperty function is used to store data in the IMS -communication window, and Atom of the property is sent via the -ClientMessage event. - </para> - </listitem> - <listitem> - <para> -The XChangeProperty function is used to store data in the IMS -communication window, and Atom of the property is sent via -PropertyNotify event. - </para> - </listitem> -</itemizedlist> - -<para> -The arguments of the XChangeProperty are as follows: -</para> - -<table frame="none" id="xchangeproperty_events_format_b"> - <title>The XChangeProperty event's format</title> - <tgroup cols="3"> - <colspec colname="col1" colwidth="1*" colsep="0"/> - <colspec colname="col2" colwidth="1*" colsep="1"/> - <colspec colname="col3" colwidth="3.5*" colsep="0"/> - <spanspec namest="col1" nameend="col2" spanname="span-horiz" align="left"/> - <thead> - <row> - <entry align="left" spanname="span-horiz">Argument</entry> - <entry align="left">Contents</entry> - </row> - </thead> - <tbody> - <row rowsep="0"> - <entry>Display</entry> - <entry>*display</entry> - <entry>The display to which connects</entry> - </row> - <row rowsep="0"> - <entry>Window</entry> - <entry>window</entry> - <entry>IMS communication window ID</entry> - </row> - <row rowsep="0"> - <entry>Atom</entry> - <entry>property</entry> - <entry>read/write property Atom (*1)</entry> - </row> - <row rowsep="0"> - <entry>int</entry> - <entry>format</entry> - <entry>8</entry> - </row> - <row rowsep="0"> - <entry>int</entry> - <entry>mode</entry> - <entry>PropModeAppend</entry> - </row> - <row rowsep="0"> - <entry>u_char</entry> - <entry>*data</entry> - <entry>read/write DATA</entry> - </row> - <row rowsep="0"> - <entry>int</entry> - <entry>nelements</entry> - <entry>length of DATA</entry> - </row> - </tbody> - </tgroup> -</table> - -<para> -(*1) The read/write property ATOM allocates some strings, which are not -allocated by the client, by <function>XInternAtom</function>. -</para> - -<para> -The IM Server changes the property with the mode of PropModeAppend and -the client reads it with the delete mode, i.e. (delete = True). -</para> - -<para> -If Atom is notified via ClientMessage event, the format of the ClientMessage -is as follows: -</para> - -<table frame="none" id="clientmessage_events_format_to_send_atom_of_property_2"> - <title>The ClientMessage event's format to send Atom of property</title> - <tgroup cols="3"> - <colspec colname="col1" colwidth="1*" colsep="0"/> - <colspec colname="col2" colwidth="1*" colsep="1"/> - <colspec colname="col3" colwidth="3.5*" colsep="0"/> - <spanspec namest="col1" nameend="col2" spanname="span-horiz" align="left"/> - <thead> - <row> - <entry align="left" spanname="span-horiz">Structure Member</entry> - <entry align="left">Contents</entry> - </row> - </thead> - <tbody> - <row rowsep="0"> - <entry>int</entry> - <entry>type</entry> - <entry>ClientMessage</entry> - </row> - <row rowsep="0"> - <entry>u_long</entry> - <entry>serial</entry> - <entry>Set by the X Window System</entry> - </row> - <row rowsep="0"> - <entry>Bool</entry> - <entry>send_event</entry> - <entry>Set by the X Window System</entry> - </row> - <row rowsep="0"> - <entry>Display</entry> - <entry>*display</entry> - <entry>The display to which connects</entry> - </row> - <row rowsep="0"> - <entry>Window</entry> - <entry>window</entry> - <entry>IMS Window ID</entry> - </row> - <row rowsep="0"> - <entry>Atom</entry> - <entry>message_type</entry> - <entry>XInternAtom(display, "_XIM_PROTOCOL", False)</entry> - </row> - <row rowsep="0"> - <entry>int</entry> - <entry>format</entry> - <entry>8</entry> - </row> - <row rowsep="0"> - <entry>long</entry> - <entry>data.1[0]</entry> - <entry>length of read/write property Atom</entry> - </row> - <row rowsep="0"> - <entry>long</entry> - <entry>data.1[1]</entry> - <entry>read/write property Atom</entry> - </row> - </tbody> - </tgroup> -</table> - -</sect4> -</sect3> -<sect3 id="Closing_Connection"> -<title>Closing Connection</title> - -<para> -If the client disconnect with the IM Server, shutdown function should -free the communication window properties and etc.. -</para> - -</sect3> -</sect2> -</sect1> - -<sect1 id="References"> -<title>References</title> -<para> -[1] Masahiko Narita and Hideki Hiura, <emphasis remap='I'>"The Input Method Protocol"</emphasis> -</para> -</sect1> - -</chapter> -</book> +<?xml version="1.0" encoding="UTF-8" ?>
+<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN"
+ "http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd">
+
+<book id="trans">
+
+<bookinfo>
+ <title>The XIM Transport Specification</title>
+ <subtitle>Revision 0.1</subtitle>
+ <releaseinfo>X Version 11, Release 7</releaseinfo>
+ <authorgroup>
+ <author>
+ <firstname>Takashi</firstname><surname>Fujiwara</surname>
+ <affiliation><orgname>FUJITSU LIMITED</orgname></affiliation>
+ </author>
+ </authorgroup>
+ <copyright><year>1994</year><holder>FUJITSU LIMITED</holder></copyright>
+ <copyright><year>1994</year><holder>X Consortium</holder></copyright>
+
+ <productnumber>Revision 0.1</productnumber>
+
+
+<abstract>
+<para>
+This specification describes the transport layer interfaces between Xlib and IM Server,
+which makes various channels usable such as X protocol or TCP/IP, DECnet and etc.
+</para>
+</abstract>
+
+<legalnotice>
+
+<para>
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files
+(the “Software”), to deal in the Software without restriction,
+including without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to permit
+persons to whom the Software is furnished to do so, subject to the following
+conditions:
+</para>
+
+<para>
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+</para>
+
+<para>
+THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+NO EVENT SHALL THE X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+</para>
+
+<para>
+Except as contained in this notice, the name of The Open Group shall not
+be used in advertising or otherwise to promote the sale, use or other dealings
+in this Software without prior written authorization from X Consortium.
+</para>
+
+<para>X Window System is a trademark of The Open Group.</para>
+
+</legalnotice>
+</bookinfo>
+
+<chapter id="xim_transport_specification">
+<title>X Transport Specification</title>
+
+<sect1 id="Introduction">
+<title>Introduction</title>
+<!-- .XS -->
+<!-- (SN Introduction -->
+<!-- .XE -->
+<para>
+<!-- .LP -->
+The Xlib XIM implementation is layered into three functions, a protocol
+layer, an interface layer and a transport layer. The purpose of this
+layering is to make the protocol independent of transport implementation.
+Each function of these layers are:
+<!-- .RS 3 -->
+</para>
+<variablelist>
+ <varlistentry>
+ <term><emphasis>The protocol layer</emphasis></term>
+ <listitem>
+ <para>
+implements overall function of XIM and calls the interface layer
+functions when it needs to communicate to IM Server.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><emphasis>The interface layer</emphasis></term>
+ <listitem>
+ <para>
+separates the implementation of the transport layer from the protocol
+layer, in other words, it provides implementation independent hook for
+the transport layer functions.
+ </para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><emphasis>The transport layer</emphasis></term>
+ <listitem>
+ <para>
+handles actual data communication with IM Server. It is done by a set
+of several functions named transporters.
+ </para>
+ </listitem>
+ </varlistentry>
+</variablelist>
+
+<para>
+This specification describes the interface layer and the transport
+layer, which makes various communication channels usable such as
+X protocol or, TCP/IP, DECnet, STREAM, etc., and provides
+the information needed for adding another new transport layer.
+In addition, sample implementations for the transporter using the
+X connection is described in section 4. <!-- xref -->
+</para>
+</sect1>
+
+<sect1 id="Initialization">
+<title>Initialization</title>
+
+<sect2 id="Registering_structure_to_initialize">
+<title>Registering structure to initialize</title>
+
+<para>
+The structure typed as TransportSW contains the list of the transport
+layer the specific implementations supports.
+</para>
+
+<literallayout class="monospaced">
+typedef struct {
+ char *transport_name;
+ Bool (*config);
+} TransportSW;
+</literallayout>
+
+<informaltable frame="none">
+ <tgroup cols="2">
+ <colspec colname="col1" colwidth="1*" colsep="0"/>
+ <colspec colname="col2" colwidth="1*" colsep="0"/>
+ <tbody>
+ <row rowsep="0">
+ <entry><emphasis>transport_name</emphasis></entry>
+ <entry>name of transport<footnote><para>Refer to "The Input Method Protocol: Appendix B</para></footnote></entry>
+ </row>
+ <row rowsep="0">
+ <entry><emphasis>config</emphasis></entry>
+ <entry>initial configuration function</entry>
+ </row>
+ </tbody>
+ </tgroup>
+</informaltable>
+
+<para>
+A sample entry for the Xlib supporting transporters is shown below:
+</para>
+
+<literallayout class="monospaced">
+TransportSW _XimTransportRec[] = {
+/* char <emphasis remap='I'>*</emphasis>:
+ * transport_name, Bool <emphasis remap='I'>(*config)()</emphasis>
+ */
+ "X", _XimXConf,
+ "tcp", _XimTransConf,
+ "local", _XimTransConf,
+ "decnet", _XimTransConf,
+ "streams", _XimTransConf,
+ (char *)NULL, (Bool (*)())NULL,
+};
+</literallayout>
+
+</sect2>
+<sect2 id="Initialization_function">
+<title>Initialization function</title>
+<!-- .XS -->
+<!-- (SN Initialization function -->
+<!-- .XE -->
+<para>
+The following function will be called once when Xlib configures the
+transporter functions.
+</para>
+
+<funcsynopsis>
+<funcprototype>
+ <funcdef>Bool <function>(*config)</function></funcdef>
+ <paramdef>XIM<parameter> im</parameter></paramdef>
+ <paramdef>char<parameter> *transport_data</parameter></paramdef>
+</funcprototype>
+</funcsynopsis>
+
+<variablelist>
+ <varlistentry>
+ <term>
+ <emphasis remap='I'>im</emphasis>
+ </term>
+ <listitem>
+ <para>
+Specifies XIM structure address.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>
+ <emphasis remap='I'>transport_data</emphasis>
+ </term>
+ <listitem>
+ <para>
+Specifies the data specific to the transporter, in IM Server address.<footnote><para>Refer to "The Input Method Protocol: Appendix B</para></footnote>
+ </para>
+ </listitem>
+ </varlistentry>
+</variablelist>
+
+<para>
+This function must setup the transporter function pointers.
+</para>
+
+<para>
+<!-- .LP -->
+The actual <emphasis remap='I'>config</emphasis> function will be chosen by IM Server at the
+pre-connection time, matching by the <emphasis remap='I'>transport_name</emphasis> specified
+in the <function>_XimTransportRec</function> array; The specific members of XimProto
+structure listed below must be initialized so that point they
+appropriate transporter functions.
+</para>
+
+<para>
+If the specified transporter has been configured successfully, this
+function returns True. There is no Alternative Entry for config
+function itself.
+</para>
+
+<para>
+The structure XimProto contains the following function pointers:
+</para>
+
+<literallayout class="monospaced">
+Bool (*connect)(); /* Open connection */
+Bool (*shutdown)(); /* Close connection */
+Bool (*write)(); /* Write data */
+Bool (*read)(); /* Read data */
+Bool (*flush)(); /* Flush data buffer */
+Bool (*register_dispatcher)(); /* Register asynchronous data handler */
+Bool (*call_dispatcher)(); /* Call dispatcher */
+</literallayout>
+
+<para>
+These functions are called when Xlib needs to communicate the
+IM Server. These functions must process the appropriate procedure
+described below.
+</para>
+
+</sect2>
+</sect1>
+<sect1 id="The_interface_transport_layer_functions">
+<title>The interface/transport layer functions</title>
+<para>
+Following functions are used for the transport interface.
+</para>
+
+<table frame="all" id="transport_layer_functions_2">
+ <title>The Transport Layer Functions</title>
+ <tgroup cols="3">
+ <colspec colname="col1" colwidth="3*" colsep="1"/>
+ <colspec colname="col2" colwidth="3*" colsep="1"/>
+ <colspec colname="col3" colwidth="1*" colsep="1"/>
+ <thead>
+ <row>
+ <entry align="center">Alternate Entry (Interface Layer)</entry>
+ <entry align="center">XimProto member (Transport Layer)</entry>
+ <entry align="center">Section</entry>
+ </row>
+ </thead>
+ <tbody>
+ <row>
+ <entry>_XimConnect</entry>
+ <entry>connect</entry>
+ <entry>3.1</entry>
+ </row>
+ <row>
+ <entry>_XimShutdown</entry>
+ <entry>shutdown</entry>
+ <entry>3.2</entry>
+ </row>
+ <row>
+ <entry>_XimWrite</entry>
+ <entry>write</entry>
+ <entry>3.3</entry>
+ </row>
+ <row>
+ <entry>_XimRead</entry>
+ <entry>read</entry>
+ <entry>3.4</entry>
+ </row>
+ <row>
+ <entry>_XimFlush</entry>
+ <entry>flush</entry>
+ <entry>3.5</entry>
+ </row>
+ <row>
+ <entry>_XimRegisterDispatcher</entry>
+ <entry>register_dispatcher</entry>
+ <entry>3.6</entry>
+ </row>
+ <row>
+ <entry>_XimCallDispatcher</entry>
+ <entry>call_dispatcher</entry>
+ <entry>3.7</entry>
+ </row>
+ </tbody>
+ </tgroup>
+</table>
+
+<para>
+The Protocol layer calls the above functions using the Alternative
+Entry in the left column. The transport implementation defines
+XimProto member function in the right column. The Alternative Entry is
+provided so as to make easier to implement the Protocol Layer.
+</para>
+
+<sect2 id="Opening_connection">
+<title>Opening connection</title>
+<para>
+<!-- .LP -->
+When <function>XOpenIM</function> is called, the following function is called to connect
+with the IM Server.
+</para>
+
+<funcsynopsis>
+<funcprototype>
+ <funcdef>Bool <function>(*connect)</function></funcdef>
+ <paramdef>XIM<parameter> im</parameter></paramdef>
+</funcprototype>
+</funcsynopsis>
+
+<variablelist>
+ <varlistentry>
+ <term>
+ <emphasis remap='I'>im</emphasis>
+ </term>
+ <listitem>
+ <para>
+Specifies XIM structure address.
+ </para>
+ </listitem>
+ </varlistentry>
+</variablelist>
+
+<para>
+This function must establishes the connection to the IM Server. If the
+connection is established successfully, this function returns True.
+The Alternative Entry for this function is:
+</para>
+
+<funcsynopsis id='_ximconnect'>
+<funcprototype>
+ <funcdef>Bool <function> _XimConnect</function></funcdef>
+ <paramdef>XIM<parameter> im</parameter></paramdef>
+</funcprototype>
+</funcsynopsis>
+
+<variablelist>
+ <varlistentry>
+ <term>
+ <emphasis remap='I'>im</emphasis>
+ </term>
+ <listitem>
+ <para>
+Specifies XIM structure address.
+ </para>
+ </listitem>
+ </varlistentry>
+</variablelist>
+</sect2>
+
+<sect2 id="Closing_connection">
+<title>Closing connection</title>
+<!-- .XS -->
+<!-- (SN Closing connection -->
+<!-- .XE -->
+<para>
+<!-- .LP -->
+When <function>XCloseIM</function> is called, the following function is called to
+disconnect the connection with the IM Server. The Alternative Entry
+for this function is:
+</para>
+
+<funcsynopsis>
+<funcprototype>
+ <funcdef>Bool <function> (*shutdown)</function></funcdef>
+ <paramdef>XIM<parameter> im</parameter></paramdef>
+</funcprototype>
+</funcsynopsis>
+
+<variablelist>
+ <varlistentry>
+ <term>
+ <emphasis remap='I'>im</emphasis>
+ </term>
+ <listitem>
+ <para>
+Specifies XIM structure address.
+ </para>
+ </listitem>
+ </varlistentry>
+</variablelist>
+
+<para>
+<!-- .LP -->
+This function must close connection with the IM Server. If the
+connection is closed successfully, this function returns True. The
+Alternative Entry for this function is:
+</para>
+
+<funcsynopsis id='_ximshutdown'>
+<funcprototype>
+ <funcdef>Bool <function>_XimShutdown</function></funcdef>
+ <paramdef>XIM<parameter> im</parameter></paramdef>
+</funcprototype>
+</funcsynopsis>
+
+<variablelist>
+ <varlistentry>
+ <term>
+ <emphasis remap='I'>im</emphasis>
+ </term>
+ <listitem>
+ <para>
+Specifies XIM structure address.
+ </para>
+ </listitem>
+ </varlistentry>
+</variablelist>
+
+</sect2>
+
+<sect2 id="Writing_data">
+<title>Writing data</title>
+<para>
+The following function is called, when Xlib needs to write data to the
+IM Server.
+</para>
+
+<funcsynopsis id='_ximwrite'>
+<funcprototype>
+ <funcdef>Bool <function> _XimWrite</function></funcdef>
+ <paramdef>XIM<parameter> im</parameter></paramdef>
+ <paramdef>INT16<parameter> len</parameter></paramdef>
+ <paramdef>XPointer<parameter> data</parameter></paramdef>
+</funcprototype>
+</funcsynopsis>
+
+<variablelist>
+ <varlistentry>
+ <term>
+ <emphasis remap='I'>im</emphasis>
+ </term>
+ <listitem>
+ <para>
+Specifies XIM structure address.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>
+ <emphasis remap='I'>len</emphasis>
+ </term>
+ <listitem>
+ <para>
+Specifies the length of writing data.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>
+ <emphasis remap='I'>data</emphasis>
+ </term>
+ <listitem>
+ <para>
+Specifies the writing data.
+ </para>
+ </listitem>
+ </varlistentry>
+</variablelist>
+
+<para>
+This function writes the <emphasis remap='I'>data</emphasis> to the IM Server, regardless
+of the contents. The number of bytes is passed to <emphasis remap='I'>len</emphasis>. The
+writing data is passed to <emphasis remap='I'>data</emphasis>. If data is sent successfully,
+the function returns True. Refer to "The Input Method Protocol" for
+the contents of the writing data. The Alternative Entry for this
+function is:
+</para>
+
+<funcsynopsis>
+<funcprototype>
+ <funcdef>Bool <function>_XimWrite</function></funcdef>
+ <paramdef>XIM<parameter> im</parameter></paramdef>
+ <paramdef>INT16<parameter> len</parameter></paramdef>
+ <paramdef>XPointer<parameter> data</parameter></paramdef>
+</funcprototype>
+</funcsynopsis>
+
+<variablelist>
+ <varlistentry>
+ <term>
+ <emphasis remap='I'>im</emphasis>
+ </term>
+ <listitem>
+ <para>
+Specifies XIM structure address.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>
+ <emphasis remap='I'>len</emphasis>
+ </term>
+ <listitem>
+ <para>
+Specifies the length of writing data.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>
+ <emphasis remap='I'>data</emphasis>
+ </term>
+ <listitem>
+ <para>
+Specifies the writing data.
+ </para>
+ </listitem>
+ </varlistentry>
+</variablelist>
+
+</sect2>
+<sect2 id="Reading_data">
+<title>Reading data</title>
+<para>
+The following function is called when Xlib waits for response from IM
+server synchronously.
+</para>
+
+<funcsynopsis id='_ximread'>
+<funcprototype>
+ <funcdef>Bool <function> _XimRead</function></funcdef>
+ <paramdef>XIM<parameter> im</parameter></paramdef>
+ <paramdef>XPointer<parameter> read_buf</parameter></paramdef>
+ <paramdef>int<parameter> buf_len</parameter></paramdef>
+ <paramdef>int<parameter> *ret_len</parameter></paramdef>
+</funcprototype>
+</funcsynopsis>
+
+<variablelist>
+ <varlistentry>
+ <term>
+ <emphasis remap='I'>im</emphasis>
+ </term>
+ <listitem>
+ <para>
+Specifies XIM structure address.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>
+ <emphasis remap='I'>read_buf</emphasis>
+ </term>
+ <listitem>
+ <para>
+Specifies the buffer to store data.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>
+ <emphasis remap='I'>buf_len</emphasis>
+ </term>
+ <listitem>
+ <para>
+Specifies the size of the <emphasis remap='I'>buffer</emphasis>
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>
+ <emphasis remap='I'>ret_len</emphasis>
+ </term>
+ <listitem>
+ <para>
+Specifies the length of stored data.
+ </para>
+ </listitem>
+ </varlistentry>
+</variablelist>
+
+<para>
+This function stores the read data in <emphasis remap='I'>read_buf</emphasis>, which size is
+specified as <emphasis remap='I'>buf_len</emphasis>. The size of data is set to <emphasis remap='I'>ret_len</emphasis>.
+This function return True, if the data is read normally or reading
+data is completed.
+</para>
+<para>
+The Alternative Entry for this function is:
+</para>
+
+<funcsynopsis>
+<funcprototype>
+ <funcdef>Bool <function> _XimRead</function></funcdef>
+ <paramdef>XIM<parameter> im</parameter></paramdef>
+ <paramdef>INT16<parameter> *ret_len</parameter></paramdef>
+ <paramdef>XPointer<parameter> buf</parameter></paramdef>
+ <paramdef>int<parameter> buf_len</parameter></paramdef>
+ <paramdef>Bool<parameter> (*predicate)()</parameter></paramdef>
+ <paramdef>XPointer<parameter> predicate_arg</parameter></paramdef>
+</funcprototype>
+</funcsynopsis>
+
+<variablelist>
+ <varlistentry>
+ <term>
+ <emphasis remap='I'>im</emphasis>
+ </term>
+ <listitem>
+ <para>
+Specifies XIM structure address.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>
+ <emphasis remap='I'>ret_len</emphasis>
+ </term>
+ <listitem>
+ <para>
+Specifies the size of the <emphasis remap='I'>data</emphasis> buffer.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>
+ <emphasis remap='I'>buf</emphasis>
+ </term>
+ <listitem>
+ <para>
+Specifies the buffer to store data.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>
+ <emphasis remap='I'>buf_len</emphasis>
+ </term>
+ <listitem>
+ <para>
+Specifies the length of <emphasis remap='I'>buffer</emphasis>.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>
+ <emphasis remap='I'>predicate</emphasis>
+ </term>
+ <listitem>
+ <para>
+Specifies the predicate for the XIM data.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>
+ <emphasis remap='I'>predicate_arg</emphasis>
+ </term>
+ <listitem>
+ <para>
+Specifies the predicate specific data.
+<!-- .sp 6p -->
+ </para>
+ </listitem>
+ </varlistentry>
+</variablelist>
+
+<para>
+The predicate procedure indicates whether the <emphasis remap='I'>data</emphasis> is for the
+XIM or not. <emphasis remap='I'>len</emphasis>
+This function stores the read data in <emphasis remap='I'>buf</emphasis>, which size
+is specified as <emphasis remap='I'>buf_len</emphasis>. The size of data is set to
+<emphasis remap='I'>ret_len</emphasis>. If <emphasis remap='I'>preedicate()</emphasis>
+returns True, this function returns True. If not, it calls the registered callback function.
+</para>
+
+<para>
+The procedure and its arguments are:
+</para>
+
+
+<funcsynopsis>
+<funcprototype>
+ <funcdef>void <function>(*predicate)</function></funcdef>
+ <paramdef>XIM<parameter> im</parameter></paramdef>
+ <paramdef>INT16<parameter> len</parameter></paramdef>
+ <paramdef>XPointer<parameter> data</parameter></paramdef>
+ <paramdef>XPointer<parameter> predicate_arg</parameter></paramdef>
+</funcprototype>
+</funcsynopsis>
+
+<variablelist>
+ <varlistentry>
+ <term>
+ <emphasis remap='I'>im</emphasis>
+ </term>
+ <listitem>
+ <para>
+Specifies XIM structure address.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>
+ <emphasis remap='I'>len</emphasis>
+ </term>
+ <listitem>
+ <para>
+Specifies the size of the <emphasis remap='I'>data</emphasis> buffer.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>
+ <emphasis remap='I'>data</emphasis>
+ </term>
+ <listitem>
+ <para>
+Specifies the buffer to store data.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>
+ <emphasis remap='I'>predicate_arg</emphasis>
+ </term>
+ <listitem>
+ <para>
+Specifies the predicate specific data.
+ </para>
+ </listitem>
+ </varlistentry>
+</variablelist>
+
+</sect2>
+<sect2 id="Flushing_buffer">
+<title>Flushing buffer</title>
+<para>
+The following function is called when Xlib needs to flush the data.
+</para>
+
+<funcsynopsis>
+<funcprototype>
+ <funcdef>void <function>(*flush)</function></funcdef>
+ <paramdef>XIM<parameter> im</parameter></paramdef>
+</funcprototype>
+</funcsynopsis>
+
+<variablelist>
+ <varlistentry>
+ <term>
+ <emphasis remap='I'>im</emphasis>
+ </term>
+ <listitem>
+ <para>
+Specifies XIM structure address.
+ </para>
+ </listitem>
+ </varlistentry>
+</variablelist>
+
+<para>
+This function must flush the data stored in internal buffer on the
+transport layer. If data transfer is completed, the function returns
+True. The Alternative Entry for this function is:
+</para>
+
+<funcsynopsis id='_ximflush'>
+<funcprototype>
+ <funcdef>void <function> _XimFlush</function></funcdef>
+ <paramdef>XIM<parameter> im</parameter></paramdef>
+</funcprototype>
+</funcsynopsis>
+
+<variablelist>
+ <varlistentry>
+ <term>
+ <emphasis remap='I'>im</emphasis>
+ </term>
+ <listitem>
+ <para>
+Specifies XIM structure address.
+ </para>
+ </listitem>
+ </varlistentry>
+</variablelist>
+
+</sect2>
+<sect2 id="Registering_asynchronous_data_handler">
+<title>Registering asynchronous data handler</title>
+<para>
+Xlib needs to handle asynchronous response from IM Server. This is
+because some of the XIM data occur asynchronously to X events.
+</para>
+
+<para>
+Those data will be handled in the <emphasis remap='I'>Filter</emphasis>,
+and the <emphasis remap='I'>Filter</emphasis>
+will call asynchronous data handler in the protocol layer. Then it
+calls dispatchers in the transport layer. The dispatchers are
+implemented by the protocol layer. This function must store the
+information and prepare for later call of the dispatchers using
+<function>_XimCallDispatcher</function>.
+</para>
+
+<para>
+When multiple dispatchers are registered, they will be called
+sequentially in order of registration, on arrival of asynchronous
+data. The register_dispatcher is declared as following:
+</para>
+
+<funcsynopsis>
+<funcprototype>
+ <funcdef>Bool <function>(*register_dispatcher)</function></funcdef>
+ <paramdef>XIM<parameter> im</parameter></paramdef>
+ <paramdef>Bool<parameter> (*dispatcher)()</parameter></paramdef>
+ <paramdef>XPointer<parameter> call_data</parameter></paramdef>
+</funcprototype>
+</funcsynopsis>
+
+<variablelist>
+ <varlistentry>
+ <term>
+ <emphasis remap='I'>im</emphasis>
+ </term>
+ <listitem>
+ <para>
+Specifies XIM structure address.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>
+ <emphasis remap='I'>dispatcher</emphasis>
+ </term>
+ <listitem>
+ <para>
+Specifies the dispatcher function to register.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>
+ <emphasis remap='I'>call_data</emphasis>
+ </term>
+ <listitem>
+ <para>
+Specifies a parameter for the <emphasis remap='I'>dispatcher</emphasis>.
+ </para>
+ </listitem>
+ </varlistentry>
+</variablelist>
+
+<para>
+The dispatcher is a function of the following type:
+</para>
+
+<funcsynopsis>
+<funcprototype>
+ <funcdef>Bool <function>(*dispatcher)</function></funcdef>
+ <paramdef>XIM<parameter> im</parameter></paramdef>
+ <paramdef>INT16<parameter> len</parameter></paramdef>
+ <paramdef>XPointer<parameter> data</parameter></paramdef>
+ <paramdef>XPointer<parameter> call_data</parameter></paramdef>
+</funcprototype>
+</funcsynopsis>
+
+<variablelist>
+ <varlistentry>
+ <term>
+ <emphasis remap='I'>im</emphasis>
+ </term>
+ <listitem>
+ <para>
+Specifies XIM structure address.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>
+ <emphasis remap='I'>len</emphasis>
+ </term>
+ <listitem>
+ <para>
+Specifies the size of the <emphasis remap='I'>data</emphasis> buffer.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>
+ <emphasis remap='I'>data</emphasis>
+ </term>
+ <listitem>
+ <para>
+Specifies the buffer to store data.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>
+ <emphasis remap='I'>call_data</emphasis>
+ </term>
+ <listitem>
+ <para>
+Specifies a parameter passed to the register_dispatcher.
+ </para>
+ </listitem>
+ </varlistentry>
+</variablelist>
+
+<para>
+The dispatcher is provided by the protocol layer. They are called once
+for every asynchronous data, in order of registration. If the data is
+used, it must return True. otherwise, it must return False.
+</para>
+
+<para>
+If the dispatcher function returns True, the Transport Layer assume
+that the data has been processed by the upper layer. The Alternative
+Entry for this function is:
+</para>
+
+<funcsynopsis id='_ximregisterdispatcher'>
+<funcprototype>
+ <funcdef>Bool <function> _XimRegisterDispatcher</function></funcdef>
+ <paramdef>XIM<parameter> im</parameter></paramdef>
+ <paramdef>Bool<parameter> (*dispatcher)()</parameter></paramdef>
+ <paramdef>XPointer<parameter> call_data</parameter></paramdef>
+</funcprototype>
+</funcsynopsis>
+
+<variablelist>
+ <varlistentry>
+ <term>
+ <emphasis remap='I'>im</emphasis>
+ </term>
+ <listitem>
+ <para>
+Specifies XIM structure address.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>
+ <emphasis remap='I'>dispatcher</emphasis>
+ </term>
+ <listitem>
+ <para>
+Specifies the dispatcher function to register.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>
+ <emphasis remap='I'>call_data</emphasis>
+ </term>
+ <listitem>
+ <para>
+Specifies a parameter for the <emphasis remap='I'>dispatcher</emphasis>.
+ </para>
+ </listitem>
+ </varlistentry>
+</variablelist>
+
+</sect2>
+<sect2 id="Calling_dispatcher">
+<title>Calling dispatcher</title>
+<para>
+The following function is used to call the registered dispatcher
+function, when the asynchronous response from IM Server has arrived.
+</para>
+
+<funcsynopsis>
+<funcprototype>
+ <funcdef>Bool <function>(*call_dispatcher)</function></funcdef>
+ <paramdef>XIM<parameter> im</parameter></paramdef>
+ <paramdef>INT16<parameter> len</parameter></paramdef>
+ <paramdef>XPointer<parameter> data</parameter></paramdef>
+</funcprototype>
+</funcsynopsis>
+
+<variablelist>
+ <varlistentry>
+ <term>
+ <emphasis remap='I'>im</emphasis>
+ </term>
+ <listitem>
+ <para>
+Specifies XIM structure address.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>
+ <emphasis remap='I'>len</emphasis>
+ </term>
+ <listitem>
+ <para>
+Specifies the size of <emphasis remap='I'>data</emphasis> buffer.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>
+ <emphasis remap='I'>data</emphasis>
+ </term>
+ <listitem>
+ <para>
+Specifies the buffer to store data.
+ </para>
+ </listitem>
+ </varlistentry>
+</variablelist>
+
+<para>
+The call_dispatcher must call the dispatcher function, in order of
+their registration. <emphasis remap='I'>len</emphasis> and <emphasis remap='I'>data</emphasis> are the data passed to
+register_dispatcher.
+</para>
+
+<para>
+The return values are checked at each invocation, and if it finds
+True, it immediately return with true for its return value.
+</para>
+
+<para>
+It is depend on the upper layer whether the read data is XIM
+Protocol packet unit or not.
+The Alternative Entry for this function is:
+</para>
+
+<funcsynopsis id='_ximcalldispatcher'>
+<funcprototype>
+ <funcdef>Bool <function> _XimCallDispatcher</function></funcdef>
+ <paramdef>XIM<parameter> im</parameter></paramdef>
+ <paramdef>INT16<parameter> len</parameter></paramdef>
+ <paramdef>XPointer<parameter> call_data</parameter></paramdef>
+</funcprototype>
+</funcsynopsis>
+
+</sect2>
+</sect1>
+<sect1 id="Sample_implementations_for_the_Transport_Layer">
+<title>Sample implementations for the Transport Layer</title>
+<para>
+Sample implementations for the transporter using the X connection is
+described here.
+</para>
+
+<sect2 id="X_Transport">
+<title>X Transport</title>
+<para>
+At the beginning of the X Transport connection for the XIM transport
+mechanism, two different windows must be created either in an Xlib XIM
+or in an IM Server, with which the Xlib and the IM Server exchange the
+XIM transports by using the ClientMessage events and Window Properties.
+In the following, the window created by the Xlib is referred as the
+"client communication window", and on the other hand, the window created
+by the IM Server is referred as the "IMS communication window".
+</para>
+
+<sect3 id="Connection">
+<title>Connection</title>
+<para>
+In order to establish a connection, a communication window is created.
+A ClientMessage in the following event's format is sent to the owner
+window of XIM_SERVER selection, which the IM Server has created.
+</para>
+
+<para>
+<!-- .LP -->
+Refer to "The Input Method Protocol" for the XIM_SERVER atom.
+</para>
+
+<table frame="none" id="transport_layer_functions">
+ <title>The ClientMessage sent to the IMS window.</title>
+ <tgroup cols="3">
+ <colspec colname="col1" colwidth="1*" colsep="0"/>
+ <colspec colname="col2" colwidth="1*" colsep="1"/>
+ <colspec colname="col3" colwidth="3.5*" colsep="0"/>
+ <spanspec namest="col1" nameend="col2" spanname="span-horiz" align="left"/>
+ <thead>
+ <row>
+ <entry align="left" spanname="span-horiz">Structure Member</entry>
+ <entry align="left">Contents</entry>
+ </row>
+ </thead>
+ <tbody>
+ <row rowsep="0">
+ <entry>int</entry>
+ <entry>type</entry>
+ <entry>ClientMessage</entry>
+ </row>
+ <row rowsep="0">
+ <entry>u_long</entry>
+ <entry>serial</entry>
+ <entry>Set by the X Window System</entry>
+ </row>
+ <row rowsep="0">
+ <entry>Bool</entry>
+ <entry>send_event</entry>
+ <entry>Set by the X Window System</entry>
+ </row>
+ <row rowsep="0">
+ <entry>Display</entry>
+ <entry>*display</entry>
+ <entry>The display to which connects</entry>
+ </row>
+ <row rowsep="0">
+ <entry>Window</entry>
+ <entry>window</entry>
+ <entry>IMS Window ID</entry>
+ </row>
+ <row rowsep="0">
+ <entry>Atom</entry>
+ <entry>message_type</entry>
+ <entry>XInternAtom(display, "_XIM_CONNECT", false)</entry>
+ </row>
+ <row rowsep="0">
+ <entry>int</entry>
+ <entry>format</entry>
+ <entry>32</entry>
+ </row>
+ <row rowsep="0">
+ <entry>long</entry>
+ <entry>data.1[0]</entry>
+ <entry>client communication window ID</entry>
+ </row>
+ <row rowsep="0">
+ <entry>long</entry>
+ <entry>data.1[1]</entry>
+ <entry>client-major-transport-version(*1)</entry>
+ </row>
+ <row rowsep="0">
+ <entry>long</entry>
+ <entry>data.1[2]</entry>
+ <entry>client-major-transport-version(*1)</entry>
+ </row>
+ </tbody>
+ </tgroup>
+</table>
+
+<para>
+In order to establish the connection (to notify the IM Server communication
+window), the IM Server sends a ClientMessage in the following event's
+format to the client communication window.
+</para>
+
+<table frame="none" id="clientmessage_sent_by_im_server">
+ <title>The ClientMessage sent by IM Server.</title>
+ <tgroup cols="3">
+ <colspec colname="col1" colwidth="1*" colsep="0"/>
+ <colspec colname="col2" colwidth="1*" colsep="1"/>
+ <colspec colname="col3" colwidth="3.5*" colsep="0"/>
+ <spanspec namest="col1" nameend="col2" spanname="span-horiz" align="left"/>
+ <thead>
+ <row>
+ <entry align="left" spanname="span-horiz">Structure Member</entry>
+ <entry align="left">Contents</entry>
+ </row>
+ </thead>
+ <tbody>
+ <row rowsep="0">
+ <entry>int</entry>
+ <entry>type</entry>
+ <entry>ClientMessage</entry>
+ </row>
+ <row rowsep="0">
+ <entry>u_long</entry>
+ <entry>serial</entry>
+ <entry>Set by the X Window System</entry>
+ </row>
+ <row rowsep="0">
+ <entry>Bool</entry>
+ <entry>send_event</entry>
+ <entry>Set by the X Window System</entry>
+ </row>
+ <row rowsep="0">
+ <entry>Display</entry>
+ <entry>*display</entry>
+ <entry>The display to which connects</entry>
+ </row>
+ <row rowsep="0">
+ <entry>Window</entry>
+ <entry>window</entry>
+ <entry>IMS Window ID</entry>
+ </row>
+ <row rowsep="0">
+ <entry>Atom</entry>
+ <entry>message_type</entry>
+ <entry>XInternAtom(display, "_XIM_CONNECT", false)</entry>
+ </row>
+ <row rowsep="0">
+ <entry>int</entry>
+ <entry>format</entry>
+ <entry>32</entry>
+ </row>
+ <row rowsep="0">
+ <entry>long</entry>
+ <entry>data.1[0]</entry>
+ <entry>client communication window ID</entry>
+ </row>
+ <row rowsep="0">
+ <entry>long</entry>
+ <entry>data.1[1]</entry>
+ <entry>client-major-transport-version(*1)</entry>
+ </row>
+ <row rowsep="0">
+ <entry>long</entry>
+ <entry>data.1[2]</entry>
+ <entry>client-major-transport-version(*1)</entry>
+ </row>
+ <row rowsep="0">
+ <entry>long</entry>
+ <entry>data.1[3]</entry>
+ <entry>dividing size between ClientMessage and Property(*2)</entry>
+ </row>
+ </tbody>
+ </tgroup>
+</table>
+
+<para>
+(*1) major/minor-transport-version
+</para>
+
+<para>
+The read/write method is decided by the combination of
+major/minor-transport-version, as follows:
+</para>
+
+<table frame="all" id="readwrite_method_and_the_majorminor_transport_version">
+<title>The read/write method and the major/minor-transport-version</title>
+ <tgroup cols="3">
+ <colspec colname="col1" colwidth="1*" colsep="1"/>
+ <colspec colname="col2" colwidth="1*" colsep="1"/>
+ <colspec colname="col3" colwidth="3*" colsep="1"/>
+ <spanspec namest="col1" nameend="col2" spanname="span-horiz" align="center"/>
+ <thead>
+ <row>
+ <entry spanname="span-horiz">Transport-version</entry>
+ <entry>read/write</entry>
+ </row>
+ <row>
+ <entry>major</entry>
+ <entry>minor</entry>
+ <entry></entry>
+ </row>
+ </thead>
+ <tbody>
+ <row rowsep="0">
+ <entry morerows="2">0</entry>
+ <entry>0</entry>
+ <entry>only-CM & Property-with-CM</entry>
+ </row>
+ <row rowsep="0">
+ <entry>1</entry>
+ <entry>only-CM & multi-CM</entry>
+ </row>
+ <row rowsep="1">
+ <entry>2</entry>
+ <entry>only-CM & multi-CM & Property-with-CM</entry>
+ </row>
+ <row rowsep="1">
+ <entry>1</entry>
+ <entry>0</entry>
+ <entry>PropertyNotify</entry>
+ </row>
+ <row rowsep="0">
+ <entry morerows="1">2</entry>
+ <entry>0</entry>
+ <entry>only-CM & PropertyNotify</entry>
+ </row>
+ <row>
+ <entry>1</entry>
+ <entry>only-CM & multi-CM & PropertyNotify</entry>
+ </row>
+ </tbody>
+ </tgroup>
+</table>
+
+<literallayout class="monospaced">
+only-CM : data is sent via a ClientMessage
+multi-CM : data is sent via multiple ClientMessages
+Property-with-CM : data is written in Property, and its Atom
+ is send via ClientMessage
+PropertyNotify : data is written in Property, and its Atom
+ is send via PropertyNotify
+
+</literallayout>
+
+
+<para>
+The method to decide major/minor-transport-version is as follows:
+</para>
+
+<itemizedlist>
+ <listitem>
+ <para>
+The client sends 0 as major/minor-transport-version to the IM Server.
+The client must support all methods in Table 4-3. <!-- xref -->
+The client may send another number as major/minor-transport-version to
+use other method than the above in the future.
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+The IM Server sends its major/minor-transport-version number to
+the client. The client sends data using the method specified by the
+IM Server.
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+If major/minor-transport-version number is not available, it is regarded
+as 0.
+ </para>
+ </listitem>
+</itemizedlist>
+
+<para>
+(*2) dividing size between ClientMessage and Property
+</para>
+
+<para>
+If data is sent via both of multi-CM and Property, specify the dividing
+size between ClientMessage and Property. The data, which is smaller than
+this size, is sent via multi-CM (or only-CM), and the data, which is
+lager than this size, is sent via Property.
+</para>
+
+</sect3>
+
+<sect3 id="read_write_">
+<title>read/write </title>
+<para>
+The data is transferred via either ClientMessage or Window Property in
+the X Window System.
+</para>
+
+<sect4 id="Format_for_the_data_from_the_Client_to_the_IM_Server">
+<title>Format for the data from the Client to the IM Server</title>
+<para>
+<emphasis role="bold">ClientMessage</emphasis>
+</para>
+
+<para>
+If data is sent via ClientMessage event, the format is as follows:
+</para>
+
+<table frame="none" id="clientmessage_events_format_first_or_middle">
+ <title>The ClientMessage event's format (first or middle)</title>
+ <tgroup cols="3">
+ <colspec colname="col1" colwidth="1*" colsep="0"/>
+ <colspec colname="col2" colwidth="1*" colsep="1"/>
+ <colspec colname="col3" colwidth="3.5*" colsep="0"/>
+ <spanspec namest="col1" nameend="col2" spanname="span-horiz" align="left"/>
+ <thead>
+ <row>
+ <entry align="left" spanname="span-horiz">Structure Member</entry>
+ <entry align="left">Contents</entry>
+ </row>
+ </thead>
+ <tbody>
+ <row rowsep="0">
+ <entry>int</entry>
+ <entry>type</entry>
+ <entry>ClientMessage</entry>
+ </row>
+ <row rowsep="0">
+ <entry>u_long</entry>
+ <entry>serial</entry>
+ <entry>Set by the X Window System</entry>
+ </row>
+ <row rowsep="0">
+ <entry>Bool</entry>
+ <entry>send_event</entry>
+ <entry>Set by the X Window System</entry>
+ </row>
+ <row rowsep="0">
+ <entry>Display</entry>
+ <entry>*display</entry>
+ <entry>The display to which connects</entry>
+ </row>
+ <row rowsep="0">
+ <entry>Window</entry>
+ <entry>window</entry>
+ <entry>IMS Window ID</entry>
+ </row>
+ <row rowsep="0">
+ <entry>Atom</entry>
+ <entry>message_type</entry>
+ <entry>XInternAtom(display, "_XIM_MOREDATA", False)</entry>
+ </row>
+ <row rowsep="0">
+ <entry>int</entry>
+ <entry>format</entry>
+ <entry>8</entry>
+ </row>
+ <row rowsep="0">
+ <entry>char</entry>
+ <entry>data.b[20]</entry>
+ <entry>(read/write DATA : 20 byte)</entry>
+ </row>
+ </tbody>
+ </tgroup>
+</table>
+
+
+
+<table frame="none" id="clientmessage_events_format_only_or_last">
+ <title>The ClientMessage event's format (only or last)</title>
+ <tgroup cols="3">
+ <colspec colname="col1" colwidth="1*" colsep="0"/>
+ <colspec colname="col2" colwidth="1*" colsep="1"/>
+ <colspec colname="col3" colwidth="3.5*" colsep="0"/>
+ <spanspec namest="col1" nameend="col2" spanname="span-horiz" align="left"/>
+ <thead>
+ <row>
+ <entry align="left" spanname="span-horiz">Structure Member</entry>
+ <entry align="left">Contents</entry>
+ </row>
+ </thead>
+ <tbody>
+ <row rowsep="0">
+ <entry>int</entry>
+ <entry>type</entry>
+ <entry>ClientMessage</entry>
+ </row>
+ <row rowsep="0">
+ <entry>u_long</entry>
+ <entry>serial</entry>
+ <entry>Set by the X Window System</entry>
+ </row>
+ <row rowsep="0">
+ <entry>Bool</entry>
+ <entry>send_event</entry>
+ <entry>Set by the X Window System</entry>
+ </row>
+ <row rowsep="0">
+ <entry>Display</entry>
+ <entry>*display</entry>
+ <entry>The display to which connects</entry>
+ </row>
+ <row rowsep="0">
+ <entry>Window</entry>
+ <entry>window</entry>
+ <entry>IMS Window ID</entry>
+ </row>
+ <row rowsep="0">
+ <entry>Atom</entry>
+ <entry>message_type</entry>
+ <entry>XInternAtom(display, "_XIM_PROTOCOL", False)</entry>
+ </row>
+ <row rowsep="0">
+ <entry>int</entry>
+ <entry>format</entry>
+ <entry>8</entry>
+ </row>
+ <row rowsep="0">
+ <entry>char</entry>
+ <entry>data.b[20]</entry>
+ <entry>(read/write DATA : MAX 20 byte)
+<footnote><para>If the data is smaller
+than 20 bytes, all data other than available data must be 0.
+</para></footnote>
+ </entry>
+ </row>
+ </tbody>
+ </tgroup>
+</table>
+
+<para>
+<emphasis role="bold">Property</emphasis>
+</para>
+
+<para>
+In the case of large data, data will be sent via the Window Property
+for the efficiency. There are the following two methods to notify
+Property, and transport-version is decided which method is used.
+</para>
+
+<itemizedlist>
+ <listitem>
+ <para>
+The XChangeProperty function is used to store data in the client
+communication window, and Atom of the stored data is notified to the
+IM Server via ClientMessage event.
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+The XChangeProperty function is used to store data in the client
+communication window, and Atom of the stored data is notified to the
+IM Server via PropertyNotify event.
+ </para>
+ </listitem>
+</itemizedlist>
+
+<para>
+The arguments of the XChangeProperty are as follows:
+</para>
+
+
+<table frame="none" id="xchangeproperty_events_format">
+ <title>The XChangeProperty event's format</title>
+ <tgroup cols="3">
+ <colspec colname="col1" colwidth="1*" colsep="0"/>
+ <colspec colname="col2" colwidth="1*" colsep="1"/>
+ <colspec colname="col3" colwidth="3.5*" colsep="0"/>
+ <spanspec namest="col1" nameend="col2" spanname="span-horiz" align="left"/>
+ <thead>
+ <row>
+ <entry align="left" spanname="span-horiz">Argument</entry>
+ <entry align="left">Contents</entry>
+ </row>
+ </thead>
+ <tbody>
+ <row rowsep="0">
+ <entry>Display</entry>
+ <entry>*display</entry>
+ <entry>The display to which connects</entry>
+ </row>
+ <row rowsep="0">
+ <entry>Window</entry>
+ <entry>window</entry>
+ <entry>IMS communication window ID</entry>
+ </row>
+ <row rowsep="0">
+ <entry>Atom</entry>
+ <entry>property</entry>
+ <entry>read/write property Atom (*1)</entry>
+ </row>
+ <row rowsep="0">
+ <entry>int</entry>
+ <entry>format</entry>
+ <entry>8</entry>
+ </row>
+ <row rowsep="0">
+ <entry>int</entry>
+ <entry>mode</entry>
+ <entry>PropModeAppend</entry>
+ </row>
+ <row rowsep="0">
+ <entry>u_char</entry>
+ <entry>*data</entry>
+ <entry>read/write DATA</entry>
+ </row>
+ <row rowsep="0">
+ <entry>int</entry>
+ <entry>nelements</entry>
+ <entry>length of DATA</entry>
+ </row>
+ </tbody>
+ </tgroup>
+</table>
+
+<para>
+(*1) The read/write property ATOM allocates the following strings by
+<function>XInternAtom</function>.
+"_clientXXX"
+</para>
+
+<para>
+The client changes the property with the mode of PropModeAppend and
+the IM Server will read it with the delete mode i.e. (delete = True).
+</para>
+
+<para>
+If Atom is notified via ClientMessage event, the format of the ClientMessage
+is as follows:
+</para>
+
+<table frame="none" id="clientmessage_events_format_to_send_atom_of_property">
+ <title>The ClientMessage event's format to send Atom of property</title>
+ <tgroup cols="3">
+ <colspec colname="col1" colwidth="1*" colsep="0"/>
+ <colspec colname="col2" colwidth="1*" colsep="1"/>
+ <colspec colname="col3" colwidth="3.5*" colsep="0"/>
+ <spanspec namest="col1" nameend="col2" spanname="span-horiz" align="left"/>
+ <thead>
+ <row>
+ <entry align="left" spanname="span-horiz">Structure Member</entry>
+ <entry align="left">Contents</entry>
+ </row>
+ </thead>
+ <tbody>
+ <row rowsep="0">
+ <entry>int</entry>
+ <entry>type</entry>
+ <entry>ClientMessage</entry>
+ </row>
+ <row rowsep="0">
+ <entry>u_long</entry>
+ <entry>serial</entry>
+ <entry>Set by the X Window System</entry>
+ </row>
+ <row rowsep="0">
+ <entry>Bool</entry>
+ <entry>send_event</entry>
+ <entry>Set by the X Window System</entry>
+ </row>
+ <row rowsep="0">
+ <entry>Display</entry>
+ <entry>*display</entry>
+ <entry>The display to which connects</entry>
+ </row>
+ <row rowsep="0">
+ <entry>Window</entry>
+ <entry>window</entry>
+ <entry>IMS Window ID</entry>
+ </row>
+ <row rowsep="0">
+ <entry>Atom</entry>
+ <entry>message_type</entry>
+ <entry>XInternAtom(display, "_XIM_PROTOCOL", False)</entry>
+ </row>
+ <row rowsep="0">
+ <entry>int</entry>
+ <entry>format</entry>
+ <entry>8</entry>
+ </row>
+ <row rowsep="0">
+ <entry>long</entry>
+ <entry>data.1[0]</entry>
+ <entry>length of read/write property Atom</entry>
+ </row>
+ <row rowsep="0">
+ <entry>long</entry>
+ <entry>data.1[1]</entry>
+ <entry>read/write property Atom</entry>
+ </row>
+ </tbody>
+ </tgroup>
+</table>
+</sect4>
+
+<sect4 id="Format_for_the_data_from_the_IM_Server_to_the_Client">
+<title>Format for the data from the IM Server to the Client</title>
+<para>
+<emphasis role="bold">ClientMessage</emphasis>
+</para>
+
+<para>
+The format of the ClientMessage is as follows:
+</para>
+
+<table frame="none" id="clientmessage_events_format_first_or_middle_2">
+ <title>The ClientMessage event's format (first or middle)</title>
+ <tgroup cols="3">
+ <colspec colname="col1" colwidth="1*" colsep="0"/>
+ <colspec colname="col2" colwidth="1*" colsep="1"/>
+ <colspec colname="col3" colwidth="3.5*" colsep="0"/>
+ <spanspec namest="col1" nameend="col2" spanname="span-horiz" align="left"/>
+ <thead>
+ <row>
+ <entry align="left" spanname="span-horiz">Structure Member</entry>
+ <entry align="left">Contents</entry>
+ </row>
+ </thead>
+ <tbody>
+ <row rowsep="0">
+ <entry>int</entry>
+ <entry>type</entry>
+ <entry>ClientMessage</entry>
+ </row>
+ <row rowsep="0">
+ <entry>u_long</entry>
+ <entry>serial</entry>
+ <entry>Set by the X Window System</entry>
+ </row>
+ <row rowsep="0">
+ <entry>Bool</entry>
+ <entry>send_event</entry>
+ <entry>Set by the X Window System</entry>
+ </row>
+ <row rowsep="0">
+ <entry>Display</entry>
+ <entry>*display</entry>
+ <entry>The display to which connects</entry>
+ </row>
+ <row rowsep="0">
+ <entry>Window</entry>
+ <entry>window</entry>
+ <entry>IMS Window ID</entry>
+ </row>
+ <row rowsep="0">
+ <entry>Atom</entry>
+ <entry>message_type</entry>
+ <entry>XInternAtom(display, "_XIM_MOREDATA", False)</entry>
+ </row>
+ <row rowsep="0">
+ <entry>int</entry>
+ <entry>format</entry>
+ <entry>8</entry>
+ </row>
+ <row rowsep="0">
+ <entry>char</entry>
+ <entry>data.b[20]</entry>
+ <entry>(read/write DATA : 20 byte)</entry>
+ </row>
+ </tbody>
+ </tgroup>
+</table>
+
+
+
+
+
+<table frame="none" id="clientmessage_events_format_only_or_last_2">
+ <title>The ClientMessage event's format (only or last)</title>
+ <tgroup cols="3">
+ <colspec colname="col1" colwidth="1*" colsep="0"/>
+ <colspec colname="col2" colwidth="1*" colsep="1"/>
+ <colspec colname="col3" colwidth="3.5*" colsep="0"/>
+ <spanspec namest="col1" nameend="col2" spanname="span-horiz" align="left"/>
+ <thead>
+ <row>
+ <entry align="left" spanname="span-horiz">Structure Member</entry>
+ <entry align="left">Contents</entry>
+ </row>
+ </thead>
+ <tbody>
+ <row rowsep="0">
+ <entry>int</entry>
+ <entry>type</entry>
+ <entry>ClientMessage</entry>
+ </row>
+ <row rowsep="0">
+ <entry>u_long</entry>
+ <entry>serial</entry>
+ <entry>Set by the X Window System</entry>
+ </row>
+ <row rowsep="0">
+ <entry>Bool</entry>
+ <entry>send_event</entry>
+ <entry>Set by the X Window System</entry>
+ </row>
+ <row rowsep="0">
+ <entry>Display</entry>
+ <entry>*display</entry>
+ <entry>The display to which connects</entry>
+ </row>
+ <row rowsep="0">
+ <entry>Window</entry>
+ <entry>window</entry>
+ <entry>IMS Window ID</entry>
+ </row>
+ <row rowsep="0">
+ <entry>Atom</entry>
+ <entry>message_type</entry>
+ <entry>XInternAtom(display, "_XIM_PROTOCOL", False)</entry>
+ </row>
+ <row rowsep="0">
+ <entry>int</entry>
+ <entry>format</entry>
+ <entry>8</entry>
+ </row>
+ <row rowsep="0">
+ <entry>char</entry>
+ <entry>data.b[20]</entry>
+ <entry>(read/write DATA : MAX 20 byte) (*1)</entry>
+ </row>
+ </tbody>
+ </tgroup>
+</table>
+
+<para>
+(*1) If the data size is smaller than 20 bytes, all data other than available
+data must be 0.
+</para>
+
+<para>
+<emphasis role="bold">Property</emphasis>
+</para>
+
+<para>
+In the case of large data, data will be sent via the Window Property
+for the efficiency. There are the following two methods to notify
+Property, and transport-version is decided which method is used.
+</para>
+
+<itemizedlist>
+ <listitem>
+ <para>
+The XChangeProperty function is used to store data in the IMS
+communication window, and Atom of the property is sent via the
+ClientMessage event.
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+The XChangeProperty function is used to store data in the IMS
+communication window, and Atom of the property is sent via
+PropertyNotify event.
+ </para>
+ </listitem>
+</itemizedlist>
+
+<para>
+The arguments of the XChangeProperty are as follows:
+</para>
+
+<table frame="none" id="xchangeproperty_events_format_b">
+ <title>The XChangeProperty event's format</title>
+ <tgroup cols="3">
+ <colspec colname="col1" colwidth="1*" colsep="0"/>
+ <colspec colname="col2" colwidth="1*" colsep="1"/>
+ <colspec colname="col3" colwidth="3.5*" colsep="0"/>
+ <spanspec namest="col1" nameend="col2" spanname="span-horiz" align="left"/>
+ <thead>
+ <row>
+ <entry align="left" spanname="span-horiz">Argument</entry>
+ <entry align="left">Contents</entry>
+ </row>
+ </thead>
+ <tbody>
+ <row rowsep="0">
+ <entry>Display</entry>
+ <entry>*display</entry>
+ <entry>The display to which connects</entry>
+ </row>
+ <row rowsep="0">
+ <entry>Window</entry>
+ <entry>window</entry>
+ <entry>IMS communication window ID</entry>
+ </row>
+ <row rowsep="0">
+ <entry>Atom</entry>
+ <entry>property</entry>
+ <entry>read/write property Atom (*1)</entry>
+ </row>
+ <row rowsep="0">
+ <entry>int</entry>
+ <entry>format</entry>
+ <entry>8</entry>
+ </row>
+ <row rowsep="0">
+ <entry>int</entry>
+ <entry>mode</entry>
+ <entry>PropModeAppend</entry>
+ </row>
+ <row rowsep="0">
+ <entry>u_char</entry>
+ <entry>*data</entry>
+ <entry>read/write DATA</entry>
+ </row>
+ <row rowsep="0">
+ <entry>int</entry>
+ <entry>nelements</entry>
+ <entry>length of DATA</entry>
+ </row>
+ </tbody>
+ </tgroup>
+</table>
+
+<para>
+(*1) The read/write property ATOM allocates some strings, which are not
+allocated by the client, by <function>XInternAtom</function>.
+</para>
+
+<para>
+The IM Server changes the property with the mode of PropModeAppend and
+the client reads it with the delete mode, i.e. (delete = True).
+</para>
+
+<para>
+If Atom is notified via ClientMessage event, the format of the ClientMessage
+is as follows:
+</para>
+
+<table frame="none" id="clientmessage_events_format_to_send_atom_of_property_2">
+ <title>The ClientMessage event's format to send Atom of property</title>
+ <tgroup cols="3">
+ <colspec colname="col1" colwidth="1*" colsep="0"/>
+ <colspec colname="col2" colwidth="1*" colsep="1"/>
+ <colspec colname="col3" colwidth="3.5*" colsep="0"/>
+ <spanspec namest="col1" nameend="col2" spanname="span-horiz" align="left"/>
+ <thead>
+ <row>
+ <entry align="left" spanname="span-horiz">Structure Member</entry>
+ <entry align="left">Contents</entry>
+ </row>
+ </thead>
+ <tbody>
+ <row rowsep="0">
+ <entry>int</entry>
+ <entry>type</entry>
+ <entry>ClientMessage</entry>
+ </row>
+ <row rowsep="0">
+ <entry>u_long</entry>
+ <entry>serial</entry>
+ <entry>Set by the X Window System</entry>
+ </row>
+ <row rowsep="0">
+ <entry>Bool</entry>
+ <entry>send_event</entry>
+ <entry>Set by the X Window System</entry>
+ </row>
+ <row rowsep="0">
+ <entry>Display</entry>
+ <entry>*display</entry>
+ <entry>The display to which connects</entry>
+ </row>
+ <row rowsep="0">
+ <entry>Window</entry>
+ <entry>window</entry>
+ <entry>IMS Window ID</entry>
+ </row>
+ <row rowsep="0">
+ <entry>Atom</entry>
+ <entry>message_type</entry>
+ <entry>XInternAtom(display, "_XIM_PROTOCOL", False)</entry>
+ </row>
+ <row rowsep="0">
+ <entry>int</entry>
+ <entry>format</entry>
+ <entry>8</entry>
+ </row>
+ <row rowsep="0">
+ <entry>long</entry>
+ <entry>data.1[0]</entry>
+ <entry>length of read/write property Atom</entry>
+ </row>
+ <row rowsep="0">
+ <entry>long</entry>
+ <entry>data.1[1]</entry>
+ <entry>read/write property Atom</entry>
+ </row>
+ </tbody>
+ </tgroup>
+</table>
+
+</sect4>
+</sect3>
+<sect3 id="Closing_Connection">
+<title>Closing Connection</title>
+
+<para>
+If the client disconnect with the IM Server, shutdown function should
+free the communication window properties and etc..
+</para>
+
+</sect3>
+</sect2>
+</sect1>
+
+<sect1 id="References">
+<title>References</title>
+<para>
+[1] Masahiko Narita and Hideki Hiura, <emphasis remap='I'>"The Input Method Protocol"</emphasis>
+</para>
+</sect1>
+
+</chapter>
+</book>
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