XMatchVisualInfo(3X11)



XGetVisualInfo(3X11)    COMMAND REFERENCE    XGetVisualInfo(3X11)



NAME
     XGetVisualInfo, XMatchVisualInfo, XVisualIDFromVisual -
     obtain visual information

SYNOPSIS
     XVisualInfo *XGetVisualInfo(display, vinfo_mask,
     vinfo_template, nitems_return)
           Display *display;
           long vinfo_mask;
           XVisualInfo *vinfo_template;
           int *nitems_return;

     Status XMatchVisualInfo(display, screen, depth, class,
     vinfo_return)
           Display *display;
           int screen;
           int depth;
           int class;
           XVisualInfo *vinfo_return;

     VisualID XVisualIDFromVisual(visual)
            Visual *visual;

ARGUMENTS
     class     Specifies the class of the screen.

     depth     Specifies the depth of the screen.

     display   Specifies the connection to the X server.

     nitems_return
               Returns the number of matching visual structures.

     screen    Specifies the screen.

     visual    Specifies the visual type.

     vinfo_mask
               Specifies the visual mask value.

     vinfo_return
               Returns the matched visual information.

     vinfo_template
               Specifies the visual attributes that are to be
               used in matching the visual structures.

DESCRIPTION
     The XGetVisualInfo function returns a list of visual
     structures that match the attributes specified by
     vinfo_template.  If no visual structures match the template
     using the specified vinfo_mask, XGetVisualInfo returns a



X Version 11            1 September 1988                        1



XGetVisualInfo(3X11)    COMMAND REFERENCE    XGetVisualInfo(3X11)



     NULL.  To free the data returned by this function, use
     XFree.

     The 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, XMatchVisualInfo returns
     nonzero and the information on the visual to vinfo_return.
     Otherwise, when a visual is not found, XMatchVisualInfo
     returns zero.

     The XVisualIDFromVisual function returns the visual ID for
     the specified visual type.

SEE ALSO
     Xlib - C Language X Interface






































X Version 11            1 September 1988                        2

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