XGetVisualInfo(3X11) SysV XGetVisualInfo(3X11)
NAME
XGetVisualInfo, XMatchVisualInfo, XVisualIDFromVisual - obtain visual
information
SYNTAX
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 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