Tk_SetWindowVisual(3Tk)Tk_SetWindowVisual(3Tk)NAME
Tk_SetWindowVisual - change visual characteristics of window
SYNOPSIS
#include <tk.h>
int
Tk_SetWindowVisual(tkwin, visual, depth, colormap)
ARGUMENTS
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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