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+.\" Copyright \(co 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1994, 1996 X Consortium
+.\"
+.\" 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:
+.\"
+.\" The above copyright notice and this permission notice shall be included
+.\" in all copies or substantial portions of the Software.
+.\"
+.\" 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.
+.\"
+.\" Except as contained in this notice, the name of the X Consortium shall
+.\" not be used in advertising or otherwise to promote the sale, use or
+.\" other dealings in this Software without prior written authorization
+.\" from the X Consortium.
+.\"
+.\" Copyright \(co 1985, 1986, 1987, 1988, 1989, 1990, 1991 by
+.\" Digital Equipment Corporation
+.\"
+.\" Portions Copyright \(co 1990, 1991 by
+.\" Tektronix, Inc.
+.\"
+.\" Permission to use, copy, modify and distribute this documentation for
+.\" any purpose and without fee is hereby granted, provided that the above
+.\" copyright notice appears in all copies and that both that copyright notice
+.\" and this permission notice appear in all copies, and that the names of
+.\" Digital and Tektronix not be used in in advertising or publicity pertaining
+.\" to this documentation without specific, written prior permission.
+.\" Digital and Tektronix makes no representations about the suitability
+.\" of this documentation for any purpose.
+.\" It is provided ``as is'' without express or implied warranty.
+.\"
+.\" $XFree86: xc/doc/man/X11/XACHints.man,v 1.2 2001/01/27 18:19:56 dawes Exp $
+.\"
+.ds xT X Toolkit Intrinsics \- C Language Interface
+.ds xW Athena X Widgets \- C Language X Toolkit Interface
+.ds xL Xlib \- C Language X Interface
+.ds xC Inter-Client Communication Conventions Manual
+.na
+.de Ds
+.nf
+.\\$1D \\$2 \\$1
+.ft 1
+.\".ps \\n(PS
+.\".if \\n(VS>=40 .vs \\n(VSu
+.\".if \\n(VS<=39 .vs \\n(VSp
+..
+.de De
+.ce 0
+.if \\n(BD .DF
+.nr BD 0
+.in \\n(OIu
+.if \\n(TM .ls 2
+.sp \\n(DDu
+.fi
+..
+.de FD
+.LP
+.KS
+.TA .5i 3i
+.ta .5i 3i
+.nf
+..
+.de FN
+.fi
+.KE
+.LP
+..
+.de IN \" send an index entry to the stderr
+..
+.de C{
+.KS
+.nf
+.D
+.\"
+.\" choose appropriate monospace font
+.\" the imagen conditional, 480,
+.\" may be changed to L if LB is too
+.\" heavy for your eyes...
+.\"
+.ie "\\*(.T"480" .ft L
+.el .ie "\\*(.T"300" .ft L
+.el .ie "\\*(.T"202" .ft PO
+.el .ie "\\*(.T"aps" .ft CW
+.el .ft R
+.ps \\n(PS
+.ie \\n(VS>40 .vs \\n(VSu
+.el .vs \\n(VSp
+..
+.de C}
+.DE
+.R
+..
+.de Pn
+.ie t \\$1\fB\^\\$2\^\fR\\$3
+.el \\$1\fI\^\\$2\^\fP\\$3
+..
+.de ZN
+.ie t \fB\^\\$1\^\fR\\$2
+.el \fI\^\\$1\^\fP\\$2
+..
+.de hN
+.ie t <\fB\\$1\fR>\\$2
+.el <\fI\\$1\fP>\\$2
+..
+.de NT
+.ne 7
+.ds NO Note
+.if \\n(.$>$1 .if !'\\$2'C' .ds NO \\$2
+.if \\n(.$ .if !'\\$1'C' .ds NO \\$1
+.ie n .sp
+.el .sp 10p
+.TB
+.ce
+\\*(NO
+.ie n .sp
+.el .sp 5p
+.if '\\$1'C' .ce 99
+.if '\\$2'C' .ce 99
+.in +5n
+.ll -5n
+.R
+..
+. \" Note End -- doug kraft 3/85
+.de NE
+.ce 0
+.in -5n
+.ll +5n
+.ie n .sp
+.el .sp 10p
+..
+.ny0
+.TH XAllocClassHint __libmansuffix__ __xorgversion__ "XLIB FUNCTIONS"
+.SH NAME
+XAllocClassHint, XSetClassHint, XGetClassHint, XClassHint \- allocate class hints structure and set or read a window's WM_CLASS property
+.SH SYNTAX
+.HP
+XClassHint *XAllocClassHint\^(void\^);
+.HP
+XSetClassHint\^(\^Display *\fIdisplay\fP, Window \fIw\fP, XClassHint *\fIclass_hints\fP\^);
+.HP
+Status XGetClassHint\^(\^Display *\fIdisplay\fP, Window \fIw\fP, XClassHint *\fIclass_hints_return\fP\^);
+.SH ARGUMENTS
+.IP \fIdisplay\fP 1i
+Specifies the connection to the X server.
+.IP \fIclass_hints\fP 1i
+Specifies the
+.ZN XClassHint
+structure that is to be used.
+.IP \fIclass_hints_return\fP 1i
+Returns the
+.ZN XClassHint
+structure.
+.IP \fIw\fP 1i
+Specifies the window.
+.SH DESCRIPTION
+The
+.ZN XAllocClassHint
+function allocates and returns a pointer to a
+.ZN XClassHint
+structure.
+Note that the pointer fields in the
+.ZN XClassHint
+structure are initially set to NULL.
+If insufficient memory is available,
+.ZN XAllocClassHint
+returns NULL.
+To free the memory allocated to this structure,
+use
+.ZN XFree .
+.LP
+The
+.ZN XSetClassHint
+function sets the class hint for the specified window.
+If the strings are not in the Host Portable Character Encoding,
+the result is implementation-dependent.
+.LP
+.ZN XSetClassHint
+can generate
+.ZN BadAlloc
+and
+.ZN BadWindow
+errors.
+.LP
+The
+.ZN XGetClassHint
+function returns the class hint of the specified window to the members
+of the supplied structure.
+If the data returned by the server is in the Latin Portable Character Encoding,
+then the returned strings are in the Host Portable Character Encoding.
+Otherwise, the result is implementation-dependent.
+It returns a nonzero status on success;
+otherwise, it returns a zero status.
+To free res_name and res_class when finished with the strings,
+use
+.ZN XFree
+on each individually.
+.LP
+.ZN XGetClassHint
+can generate a
+.ZN BadWindow
+error.
+.SH PROPERTIES
+.TP 1i
+\s-1WM_CLASS\s+1
+Set by application programs to allow window and session
+managers to obtain the application's resources from the resource database.
+.SH STRUCTURES
+The
+.ZN XClassHint
+structure contains:
+.LP
+.IN "XClassHint" "" "@DEF@"
+.Ds 0
+.TA .5i
+.ta .5i
+typedef struct {
+ char *res_name;
+ char *res_class;
+} XClassHint;
+.De
+.LP
+The res_name member contains the application name,
+and the res_class member contains the application class.
+Note that the name set in this property may differ from the name set as WM_NAME.
+That is, WM_NAME specifies what should be displayed in the title bar and,
+therefore, can contain temporal information (for example, the name of
+a file currently in an editor's buffer).
+On the other hand,
+the name specified as part of WM_CLASS is the formal name of the application
+that should be used when retrieving the application's resources from the
+resource database.
+.SH DIAGNOSTICS
+.TP 1i
+.ZN BadAlloc
+The server failed to allocate the requested resource or server memory.
+.TP 1i
+.ZN BadWindow
+A value for a Window argument does not name a defined Window.
+.SH "SEE ALSO"
+XAllocIconSize(3X11),
+XAllocSizeHints(3X11),
+XAllocWMHints(3X11),
+XFree(3X11),
+XSetCommand(3X11),
+XSetTransientForHint(3X11),
+XSetTextProperty(3X11),
+XSetWMClientMachine(3X11),
+XSetWMColormapWindows(3X11),
+XSetWMIconName(3X11),
+XSetWMName(3X11),
+XSetWMProperties(3X11),
+XSetWMProtocols(3X11),
+XStringListToTextProperty(3X11)
+.br
+\fI\*(xL\fP