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markom |
'\"
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'\" Copyright (c) 1992 The Regents of the University of California.
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'\" Copyright (c) 1994-1996 Sun Microsystems, Inc.
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'\"
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'\" See the file "license.terms" for information on usage and redistribution
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'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
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'\"
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'\" RCS: @(#) $Id: SetVisual.3,v 1.1.1.1 2002-01-16 10:25:48 markom Exp $
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'\"
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.so man.macros
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.TH Tk_SetWindowVisual 3 4.0 Tk "Tk Library Procedures"
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.BS
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.SH NAME
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Tk_SetWindowVisual \- change visual characteristics of window
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.SH SYNOPSIS
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.nf
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\fB#include \fR
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.sp
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int
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\fBTk_SetWindowVisual\fR(\fItkwin, visual, depth, colormap\fR)
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.SH ARGUMENTS
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.AS "Tk_Window int" colormap
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.AP Tk_Window tkwin in
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Token for window.
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.AP Visual *visual in
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New visual type to use for \fItkwin\fR.
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.AP "int" depth in
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Number of bits per pixel desired for \fItkwin\fR.
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.AP Colormap colormap in
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New colormap for \fItkwin\fR, which must be compatible with
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\fIvisual\fR and \fIdepth\fR.
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.BE
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.SH DESCRIPTION
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.PP
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When Tk creates a new window it assigns it the default visual
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characteristics (visual, depth, and colormap) for its screen.
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\fBTk_SetWindowVisual\fR may be called to change them.
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\fBTk_SetWindowVisual\fR must be called before the window has
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actually been created in X (e.g. before \fBTk_MapWindow\fR or
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\fBTk_MakeWindowExist\fR has been invoked for the window).
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The safest thing is to call \fBTk_SetWindowVisual\fR immediately
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after calling \fBTk_CreateWindow\fR.
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If \fItkwin\fR has already been created before \fBTk_SetWindowVisual\fR
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is called then it returns 0 and doesn't make any changes; otherwise
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it returns 1 to signify that the operation
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completed successfully.
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.PP
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Note: \fBTk_SetWindowVisual\fR should not be called if you just want
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to change a window's colormap without changing its visual or depth;
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call \fBTk_SetWindowColormap\fR instead.
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.SH KEYWORDS
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colormap, depth, visual
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