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'\" t
.\" Copyright 1999 Oracle and/or its affiliates. All rights reserved.
.\"
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.\"
.TH XkbNoteControlsChanges __libmansuffix__ __xorgversion__ "XKB FUNCTIONS"
.SH NAME
XkbNoteControlsChanges \- Notes the changes in a changes structure when a client receives an XkbControlsNotify
event
.SH SYNOPSIS
.HP
.B void XkbNoteControlsChanges
.BI "(\^XkbControlsChangesPtr " "changes" "\^,"
.BI "XkbControlsNotifyEvent *" "new" "\^,"
.BI "unsigned int " "wanted" "\^);"
.if n .ti +5n
.if t .ti +.5i
.SH ARGUMENTS
.TP
.I \- changes
records changes indicated by new
.TP
.I \- new
tells which things have changed
.TP
.I \- wanted
tells which parts of new to record in changes
.SH DESCRIPTION
.LP
Whenever a field in the controls structure changes in the server's keyboard description, the server sends an
XkbControlsNotify event to all interested clients.To receive XkbControlsNotify events under all possible
conditions, use
.I XkbSelectEvents
and pass XkbControlsNotifyMask in both
.I bits_to_change
and
.I values_for_bits.
To receive XkbControlsNotify events only under certain conditions, use
.I XkbSelectEventDetails
using XkbControlsNotify as the
.I event_type
and specifying the desired state changes in
.I bits_to_change
and
.I values_for_bits
using mask bits from Table 1.
Table 1 shows the actual values for the individual mask bits used to select
controls for
modification and to enable and disable the control. Note that the same mask bit
is used to
specify general modifications to the parameters used to configure the control
(which), and to
enable and disable the control (enabled_ctrls). The anomalies in the table (no
"ok" in column)
are for controls that have no configurable attributes; and for controls that are
not boolean
controls and therefore cannot be enabled or disabled.
.TS
c s s s
l l l l
l l l l
l l l l.
Table 1 Controls Mask Bits
_
Mask Bit which or enabled Value
changed_ctrls _ctrls
_
XkbRepeatKeysMask ok ok (1L<<0)
XkbSlowKeysMask ok ok (1L<<1)
XkbBounceKeysMask ok ok (1L<<2)
XkbStickyKeysMask ok ok (1L<<3)
XkbMouseKeysMask ok ok (1L<<4)
XkbMouseKeysAccelMask ok ok (1L<<5)
XkbAccessXKeysMask ok ok (1L<<6)
XkbAccessXTimeoutMask ok ok (1L<<7)
XkbAccessXFeedbackMask ok ok (1L<<8)
XkbAudibleBellMask ok (1L<<9)
XkbOverlay1Mask ok (1L<<10)
XkbOverlay2Mask ok (1L<<11)
XkbIgnoreGroupLockMask ok (1L<<12)
XkbGroupsWrapMask ok (1L<<27)
XkbInternalModsMask ok (1L<<28)
XkbIgnoreLockModsMask ok (1L<<29)
XkbPerKeyRepeatMask ok (1L<<30)
XkbControlsEnabledMask ok (1L<<31)
XkbAccessXOptionsMask ok ok (XkbStickyKeysMask |
XkbAccessXFeedbackMask)
XkbAllBooleanCtrlsMask ok (0x00001FFF)
XkbAllControlsMask ok (0xF8001FFF)
.TE
The
.I changed_ctrls
field specifies the controls components that have changed and consists of bits taken from the masks defined in
Table 1 with "ok" in the
.I changed_ctrls
column.
The controls currently enabled in the server are reported in the
.I enabled_ctrls
field. If any controls were just enabled or disabled (that is, the contents of the
.I enabled_ctrls
field changed), they are flagged in the
.I enabled_ctrl_changes
field. The valid bits for these fields are the masks listed in Table 1 with "ok" in the
.I enabled_ctrls
column. The
.I num_groups
field reports the number of groups bound to the key belonging to the most number of groups and is automatically
updated
when the keyboard mapping changes.
If the change was caused by a request from a client, the
.I keycode
and
.I event_type
fields are set to zero and the
.I req_major
and
.I req_minor
fields identify the request. The
.I req_major value is the same as the major extension opcode. Otherwise,
.I event_type
is set to the type of event that caused the change (one of KeyPress, KeyRelease, DeviceKeyPress,
DeviceKeyRelease,
ButtonPress or ButtonRelease), and
.I req_major
and
.I req_minor
are undefined. If
.I event_type
is KeyPress, KeyRelease, DeviceKeyPress, or DeviceKeyRelease, the
.I keycode
field is set to the key that caused the change. If
.I event_type
is ButtonPress or ButtonRelease,
.I keycode
contains the button number.
When a client receives an XkbControlsNotify event, it can note the changes in a changes structure using
.I XkbNoteControlsChanges.
The
.I wanted
parameter is a bitwise inclusive OR of bits taken from the set of masks specified in Table 1 with "ok" in the
.I changed_ctrls
column.
.I XkbNoteControlsChanges
copies any changes reported in
.I new
and specified in
.I wanted
into the changes record specified by
.I old.
.SH STRUCTURES
.LP
.nf
The structure for the XkbControlsNotify event is defined as follows:
typedef struct {
int type; /\(** Xkb extension base event code */
unsigned long serial; /\(** X server serial number for event */
Bool send_event; /\(** True => synthetically generated */
Display * display; /\(** server connection where event generated */
Time time; /\(** server time when event generated */
int xkb_type; /\(** XkbCompatMapNotify */
int device; /\(** Xkb device ID, will not be XkbUseCoreKbd */
unsigned int changed_ctrls; /\(** bits indicating which controls data have changed*/
unsigned int enabled_ctrls; /\(** controls currently enabled in server */
unsigned int enabled_ctrl_changes; /\(** bits indicating enabled/disabled controls */
int num_groups; /\(** current number of keyboard groups */
KeyCode keycode; /\(** != 0 => keycode of key causing change */
char event_type; /\(** Type of event causing change */
char req_major; /\(** major event code of event causing change */
char req_minor; /\(** minor event code of event causing change */
} XkbControlsNotifyEvent;
.fi
.SH "SEE ALSO"
.BR XkbSelectEventDetails (__libmansuffix__),
.BR XkbSelectEvents (__libmansuffix__)
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