>># 
>># Copyright 1990, 1991 by the Massachusetts Institute of Technology and
>># UniSoft Group Limited.
>># 
>># Permission to use, copy, modify, distribute, and sell this software and
>># its documentation for any purpose is hereby granted without fee,
>># provided that the above copyright notice appear in all copies and that
>># both that copyright notice and this permission notice appear in
>># supporting documentation, and that the names of MIT and UniSoft not be
>># used in advertising or publicity pertaining to distribution of the
>># software without specific, written prior permission.  MIT and UniSoft
>># make no representations about the suitability of this software for any
>># purpose.  It is provided "as is" without express or implied warranty.
>># 
>># $XConsortium: frpxmp.m,v 1.6 92/06/29 18:58:16 rws Exp $
>># 
>>#      SCCS:  @(#)  EPix.mc Rel 1.3	    (7/19/91)
>>#
>>TITLE XFreePixmap CH05
>>ASSERTION A XFreePixmap-1
A call to XFreePixmap removes the association between the
pixmap ID pixmap and the specified pixmap.
>>STRATEGY
For all supported depths of pixmap:
   Create a pixmap.
   Create a gc using the pixmap as the drawable.
   Free the pixmap with XFreePixmap.
   Plot (0,0) in the pixmap.
   Verify that a BadDrawable error occurred.
>>ASSERTION A XFreePixmap-2
The storage allocated to the pixmap is not recovered until
all references to it have been removed.
>>STRATEGY
Create a window.
Create a pixmap of the same dimensions as the window.
Pattern the pixmap.
Create a gc with the pixmap as the tile and the fill_mode set to FillTiled.
Free the pixmap with XFreePixmap.
Tile the entire window with XFillRectangle.
Verify that the tiled pattern matches the pixmap.
>>ASSERTION A XFreePixmap-3
When a pixmap argument does not name a valid Pixmap, then a
BadPixmap error occurs.
>>STRATEGY
Create a bad pixmap by creating and freeing a pixmap.
Call test function using bad pixmap as the pixmap argument.
Verify that a BadPixmap error occurs.
