SetVisual

Tk_SetWindowVisual(3)        Tk Library Procedures       Tk_SetWindowVisual(3)



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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.
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DESCRIPTION
       When  Tk  creates a new window it assigns it the default visual charac-
       teristics (visual, depth, and colormap)  for  its  screen.   Tk_SetWin-
       dowVisual  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  call-
       ing   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 com-
       pleted 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



Tk                                    4.0                Tk_SetWindowVisual(3)