Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!cornell!uw-beaver!uw-june!gthomas
From: gthomas@uw-june (Greg Thomas)
Newsgroups: comp.windows.x
Subject: bitmaps and NoExpose events
Message-ID: <8788@june.cs.washington.edu>
Date: 25 Jul 89 07:53:12 GMT
Sender: gthomas@june.cs.washington.edu
Reply-To: gthomas@uw-june (Greg Thomas)
Organization: U of Washington, Computer Science, Seattle
Lines: 22

I'm trying to display a bitmap in a window, using XCopyPlane.  The bitmap
never becomes visible, and a NoExpose event is generated for each call to
XCopyPlane.  I'm using X11R3 on a VAXstation 3200 running Ultrix 2.3.  Can
anyone tell me why this isn't working?  Here's the relevant code:

	#define circle_width 17
	#define circle_height 17
	static char circle_bits[] = { 0xc0, /* rest ommitted */ };

	bitmap = XCreateBitmapFromData(display, window, circle_bits,
		(unsigned int)circle_width, (unsigned int)circle_height);

	XCopyPlane(display, bitmap, window, DefaultGC(display, screen), 0, 0,
		(unsigned int)circle_width, (unsigned int)circle_height, 
		0, 0, (unsigned long)1);

When I create a pixmap (using XCreatePixmapFromBitmapData) from circle_bits,
it shows up fine after a call to XCopyArea (although a NoExpose event is still
generated).  Any help would be greatly appreciated ...

	greg
	(Please reply to: gthomas@cs.washington.edu)