287 lines
4.8 KiB
Plaintext
287 lines
4.8 KiB
Plaintext
'\" t
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.ds xT X Toolkit Intrinsics \- C Language Interface
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.ds xW Athena X Widgets \- C Language X Toolkit Interface
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.ds xL Xlib \- C Language X Interface
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.ds xC Inter-Client Communication Conventions Manual
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.na
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'\" t
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.TH XGetVisualInfo 3X11 "Release 5" "X Version 11" "XLIB FUNCTIONS"
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.SH NAME
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XGetVisualInfo, XMatchVisualInfo, XVisualIDFromVisual, XVisualInfo \- obtain visual information and visual structure
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.SH SYNTAX
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XVisualInfo *XGetVisualInfo\^(\^\fIdisplay\fP, \fIvinfo_mask\fP, \fIvinfo_template\fP, \fInitems_return\fP\^)
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.br
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Display *\fIdisplay\fP\^;
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.br
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long \fIvinfo_mask\fP\^;
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.br
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XVisualInfo *\fIvinfo_template\fP\^;
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.br
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int *\fInitems_return\fP\^;
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.LP
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Status XMatchVisualInfo\^(\^\fIdisplay\fP, \fIscreen\fP, \fIdepth\fP, \fIclass\fP, \fIvinfo_return\fP\^)
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.br
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Display *\fIdisplay\fP\^;
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.br
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int \fIscreen\fP\^;
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.br
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int \fIdepth\fP\^;
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.br
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int \fIclass\fP\^;
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.br
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XVisualInfo *\fIvinfo_return\fP\^;
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.LP
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VisualID XVisualIDFromVisual\^(\^\fIvisual\fP\^)
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.br
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Visual *\^\fIvisual\fP\^;
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.SH ARGUMENTS
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.IP \fIclass\fP 1i
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Specifies the class of the screen.
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.IP \fIdepth\fP 1i
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Specifies the depth of the screen.
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.\" $Header: display.a,v 1.1 88/02/26 10:26:29 mento Exp $
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.IP \fIdisplay\fP 1i
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Specifies the connection to the X server.
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.IP \fInitems_return\fP 1i
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Returns the number of matching visual structures.
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.IP \fIscreen\fP 1i
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Specifies the screen.
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.\" $Header: visual_gen.a,v 1.1 88/07/10 10:05:08 mento Exp $
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.IP \fIvisual\fP 1i
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Specifies the visual type.
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.IP \fIvinfo_mask\fP 1i
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Specifies the visual mask value.
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.IP \fIvinfo_return\fP 1i
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Returns the matched visual information.
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.IP \fIvinfo_template\fP 1i
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Specifies the visual attributes that are to be used in matching the visual
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structures.
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.SH DESCRIPTION
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.\" $Header: XGetVInfo.d,v 1.3 88/06/11 07:51:29 mento Exp $
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The
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.ZN XGetVisualInfo
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function returns a list of visual structures that have attributes
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equal to the attributes specified by vinfo_template.
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If no visual structures match the template using the specified vinfo_mask,
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.ZN XGetVisualInfo
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returns a NULL.
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To free the data returned by this function, use
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.ZN XFree .
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.LP
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.\" $Header: XMatVInfo.d,v 1.2 88/06/11 07:51:59 mento Exp $
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The
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.ZN XMatchVisualInfo
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function returns the visual information for a visual that matches the specified
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depth and class for a screen.
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Because multiple visuals that match the specified depth and class can exist,
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the exact visual chosen is undefined.
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If a visual is found,
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.ZN XMatchVisualInfo
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returns nonzero and the information on the visual to vinfo_return.
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Otherwise, when a visual is not found,
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.ZN XMatchVisualInfo
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returns zero.
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.LP
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The
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.ZN XVisualIDFromVisual
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function returns the visual ID for the specified visual type.
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.SH STRUCTURES
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The
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.ZN XVisualInfo
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structure contains:
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.LP
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.LP
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/* Visual information mask bits */
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.TS
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lw(.5i) lw(2.5i) lw(.8i).
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T{
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#define
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T} T{
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.ZN VisualNoMask
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T} T{
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0x0
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T}
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T{
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#define
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T} T{
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.ZN VisualIDMask
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T} T{
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0x1
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T}
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T{
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#define
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T} T{
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.ZN VisualScreenMask
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T} T{
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0x2
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T}
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T{
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#define
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T} T{
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.ZN VisualDepthMask
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T} T{
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0x4
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T}
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T{
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#define
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T} T{
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.ZN VisualClassMask
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T} T{
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0x8
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T}
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T{
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#define
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T} T{
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.ZN VisualRedMaskMask
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T} T{
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0x10
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T}
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T{
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#define
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T} T{
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.ZN VisualGreenMaskMask
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T} T{
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0x20
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T}
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T{
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#define
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T} T{
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.ZN VisualBlueMaskMask
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T} T{
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0x40
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T}
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T{
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#define
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T} T{
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.ZN VisualColormapSizeMask
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T} T{
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0x80
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T}
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T{
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#define
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T} T{
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.ZN VisualBitsPerRGBMask
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T} T{
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0x100
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T}
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T{
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#define
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T} T{
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.ZN VisualAllMask
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T} T{
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0x1FF
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T}
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.TE
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.IN "XVisualInfo" "" "@DEF@"
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.Ds 0
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.TA .5i 3i
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.ta .5i 3i
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/* Values */
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typedef struct {
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Visual *visual;
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VisualID visualid;
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int screen;
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unsigned int depth;
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int class;
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unsigned long red_mask;
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unsigned long green_mask;
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unsigned long blue_mask;
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int colormap_size;
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int bits_per_rgb;
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} XVisualInfo;
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.De
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.SH "SEE ALSO"
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XFree(3X11)
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.br
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\fI\*(xL\fP
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