Newsgroups: comp.windows.x
Path: utzoo!utgpu!news-server.csri.toronto.edu!mailrus!wuarchive!mit-eddie!bloom-beacon!LARRY.MCRCIM.MCGILL.EDU!mouse
From: mouse@LARRY.MCRCIM.MCGILL.EDU
Subject: Re:  Transparent Windows
Message-ID: <9007272157.AA16471@Larry.McRCIM.McGill.EDU>
Sender: daemon@athena.mit.edu (Mr Background)
Organization: The Internet
Date: 27 Jul 90 21:57:27 GMT
Lines: 18

> Does anyone know of a way to create a window with a transparent
> background, so you can see what's under it, but that you can also
> draw in??

Depending on what you want it for, one possibility is a window with a
background-pixmap of None.  However, this is probably not quite what
you want.  In particular, clearing a piece of such a window does not
erase the graphics; a background of None means that "clearing" a piece
of the window does not disturb the current contents of the window.

Another possibility, if you're using R4, is to use the SHAPE extension.
But typical implementations of SHAPE are very slow when changing
shapes, so you may not be able to do what you want this way.

					der Mouse

			old: mcgill-vision!mouse
			new: mouse@larry.mcrcim.mcgill.edu