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+'\" t
+.\" 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/XGetVInfo.man,v 1.4 2003/04/28 22:17:55 herrb Exp $
+.\" $XdotOrg: lib/X11/man/XGetVisualInfo.man,v 1.2 2004-04-23 18:42:09 eich 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
+'\" t
+.TH XGetVisualInfo __libmansuffix__ __xorgversion__ "XLIB FUNCTIONS"
+.SH NAME
+XGetVisualInfo, XMatchVisualInfo, XVisualIDFromVisual, XVisualInfo \- obtain visual information and visual structure
+.SH SYNTAX
+.HP
+XVisualInfo *XGetVisualInfo\^(\^Display *\fIdisplay\fP\^, long
+\fIvinfo_mask\fP\^, XVisualInfo *\fIvinfo_template\fP\^, int
+*\fInitems_return\fP\^);
+.HP
+Status XMatchVisualInfo\^(\^Display *\fIdisplay\fP\^, int \fIscreen\fP\^, int
+\fIdepth\fP\^, int \fIclass\fP\^, XVisualInfo *\fIvinfo_return\fP\^);
+.HP
+VisualID XVisualIDFromVisual\^(\^Visual *\^\fIvisual\fP\^);
+.SH ARGUMENTS
+.IP \fIclass\fP 1i
+Specifies the class of the screen.
+.IP \fIdepth\fP 1i
+Specifies the depth of the screen.
+.IP \fIdisplay\fP 1i
+Specifies the connection to the X server.
+.IP \fInitems_return\fP 1i
+Returns the number of matching visual structures.
+.IP \fIscreen\fP 1i
+Specifies the screen.
+.IP \fIvisual\fP 1i
+Specifies the visual type.
+.IP \fIvinfo_mask\fP 1i
+Specifies the visual mask value.
+.IP \fIvinfo_return\fP 1i
+Returns the matched visual information.
+.IP \fIvinfo_template\fP 1i
+Specifies the visual attributes that are to be used in matching the visual
+structures.
+.SH DESCRIPTION
+The
+.ZN XGetVisualInfo
+function returns a list of visual structures that have attributes
+equal to the attributes specified by vinfo_template.
+If no visual structures match the template using the specified vinfo_mask,
+.ZN XGetVisualInfo
+returns a NULL.
+To free the data returned by this function, use
+.ZN XFree .
+.LP
+The
+.ZN XMatchVisualInfo
+function returns the visual information for a visual that matches the specified
+depth and class for a screen.
+Because multiple visuals that match the specified depth and class can exist,
+the exact visual chosen is undefined.
+If a visual is found,
+.ZN XMatchVisualInfo
+returns nonzero and the information on the visual to vinfo_return.
+Otherwise, when a visual is not found,
+.ZN XMatchVisualInfo
+returns zero.
+.LP
+The
+.ZN XVisualIDFromVisual
+function returns the visual ID for the specified visual type.
+.SH STRUCTURES
+The
+.ZN XVisualInfo
+structure contains:
+.LP
+.LP
+/\&* Visual information mask bits */
+.TS
+lw(.5i) lw(2.5i) lw(.8i).
+T{
+\&#define
+T} T{
+.ZN VisualNoMask
+T} T{
+0x0
+T}
+T{
+\&#define
+T} T{
+.ZN VisualIDMask
+T} T{
+0x1
+T}
+T{
+\&#define
+T} T{
+.ZN VisualScreenMask
+T} T{
+0x2
+T}
+T{
+\&#define
+T} T{
+.ZN VisualDepthMask
+T} T{
+0x4
+T}
+T{
+\&#define
+T} T{
+.ZN VisualClassMask
+T} T{
+0x8
+T}
+T{
+\&#define
+T} T{
+.ZN VisualRedMaskMask
+T} T{
+0x10
+T}
+T{
+\&#define
+T} T{
+.ZN VisualGreenMaskMask
+T} T{
+0x20
+T}
+T{
+\&#define
+T} T{
+.ZN VisualBlueMaskMask
+T} T{
+0x40
+T}
+T{
+\&#define
+T} T{
+.ZN VisualColormapSizeMask
+T} T{
+0x80
+T}
+T{
+\&#define
+T} T{
+.ZN VisualBitsPerRGBMask
+T} T{
+0x100
+T}
+T{
+\&#define
+T} T{
+.ZN VisualAllMask
+T} T{
+0x1FF
+T}
+.TE
+.IN "XVisualInfo" "" "@DEF@"
+.Ds 0
+.TA .5i 3i
+.ta .5i 3i
+/\&* Values */
+
+typedef struct {
+ Visual *visual;
+ VisualID visualid;
+ int screen;
+ int depth;
+ int class;
+ unsigned long red_mask;
+ unsigned long green_mask;
+ unsigned long blue_mask;
+ int colormap_size;
+ int bits_per_rgb;
+} XVisualInfo;
+.De
+.SH "SEE ALSO"
+XFree(3X11)
+.br
+\fI\*(xL\fP