Tk_SetWindowVisual (3)
change visual characteristics of window
SYNOPSIS
#include <tk.h>
int
Tk_SetWindowVisual(tkwin, visual, depth, colormap)
ARGUMENTS
"Tk_Window int" colormap
Tk_Window tkwin in
Token for window.
Visual *visual in
New visual type to use for tkwin.
"int" depth in
Number of bits per pixel desired for tkwin.
Colormap colormap in
New colormap for tkwin, which must be compatible with
visual and depth.
DESCRIPTION
When Tk creates a new window it assigns it the default visual
characteristics (visual, depth, and colormap) for its screen.
Tk_SetWindowVisual may be called to change them.
Tk_SetWindowVisual must be called before the window has
actually been created in X (e.g. before Tk_MapWindow or
Tk_MakeWindowExist has been invoked for the window).
The safest thing is to call Tk_SetWindowVisual immediately
after calling Tk_CreateWindow.
If tkwin has already been created before Tk_SetWindowVisual
is called then it returns 0 and doesn't make any changes; otherwise
it returns 1 to signify that the operation
completed successfully.
Note: Tk_SetWindowVisual should not be called if you just want
to change a window's colormap without changing its visual or depth;
call Tk_SetWindowColormap instead.
KEYWORDS
colormap, depth, visual
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