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- '\" $Header: /user6/ouster/wish/man/RCS/SetVisual.3,v 1.4 93/04/01 09:41:58 ouster Exp $ SPRITE (Berkeley)
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- .so man.macros
- .HS Tk_SetWindowVisual tkc
- .BS
- .SH NAME
- .na
- Tk_SetWindowVisual \- change visual characteristics of window
- .ad
- .SH SYNOPSIS
- .nf
- \fB#include <tk.h>\fR
- .sp
- int
- \fBTk_SetWindowVisual\fR(\fItkwin, visual, depth, colormap\fR)
- .SH ARGUMENTS
- .AS "unsigned int" colormap
- .AP Tk_Window tkwin in
- Token for window.
- .AP Visual *visual in
- New visual type to use for \fItkwin\fR.
- .AP "unsigned int" depth in
- Number of bits per pixel desired for \fItkwin\fR.
- .AP Colormap colormap in
- New colormap for \fItkwin\fR, which must be compatible with
- \fIvisual\fR and \fIdepth\fR.
- .BE
-
- .SH DESCRIPTION
- .PP
- When Tk creates a new window it assigns it the default visual
- characteristics (visual, depth, and colormap) for its screen.
- \fBTk_SetWindowVisual\fR may be called to change them.
- \fBTk_SetWindowVisual\fR must be called before the window has
- actually been created in X (e.g. before \fBTk_MapWindow\fR or
- \fBTk_MakeWindowExist\fR has been invoked for the window).
- The safest thing is to call \fBTk_SetWindowVisual\fR immediately
- after calling \fBTk_CreateWindow\fR.
- If \fItkwin\fR has already been created before \fBTk_SetWindowVisual\fR
- is called then it returns 0 and doesn't make any changes; otherwise
- it returns 1 to signify that the operation
- completed successfully.
- .PP
- Note: \fBTk_SetWindowVisual\fR should not be called if you just want
- to change a window's colormap without changing its visual or depth;
- call \fBTk_SetWindowColormap\fR instead.
-
- .SH KEYWORDS
- colormap, depth, visual
-