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markom |
'\"
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'\" Copyright (c) 1990 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: GetPixmap.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_GetPixmap 3 4.0 Tk "Tk Library Procedures"
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.BS
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.SH NAME
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Tk_GetPixmap, Tk_FreePixmap \- allocate and free pixmaps
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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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Pixmap
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\fBTk_GetPixmap(\fIdisplay, d, width, height, depth\fB)\fR
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.sp
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\fBTk_FreePixmap(\fIdisplay, pixmap\fB)\fR
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.SH ARGUMENTS
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.AS "Drawable" *pixelPtr
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.AP Display *display in
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X display for the pixmap.
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.AP Drawable d in
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Pixmap or window where the new pixmap will be used for drawing.
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.AP "int" width in
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Width of pixmap.
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.AP "int" height in
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Height of pixmap.
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.AP "int" depth in
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Number of bits per pixel in pixmap.
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.AP Pixmap pixmap in
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Pixmap to destroy.
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.BE
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.SH DESCRIPTION
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.PP
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These procedures are identical to the Xlib procedures \fBXCreatePixmap\fR
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and \fBXFreePixmap\fR, except that they have extra code to manage X
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resource identifiers so that identifiers for deleted pixmaps can be
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reused in the future.
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It is important for Tk applications to use these procedures rather
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than \fBXCreatePixmap\fR and \fBXFreePixmap\fR; otherwise long-running
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applications may run out of resource identifiers.
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.PP
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\fBTk_GetPixmap\fR creates a pixmap suitable for drawing in \fId\fR,
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with dimensions given by \fIwidth\fR, \fIheight\fR, and \fIdepth\fR,
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and returns its identifier.
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\fBTk_FreePixmap\fR destroys the pixmap given by \fIpixmap\fR and makes
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its resource identifier available for reuse.
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.SH KEYWORDS
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pixmap, resource identifier
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