Transparent BITBLT Raster OP code (ROP) ???

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#2365

From: Tommie Daniel
Date: Wed, 27 Jan 1993 16:40

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Is there a ROP code to accomplish a transparent blit in 256 color modes.

In other words,  if I have an off screen image with a black background
(index 0) and I want to bitblt it on top of an existing 256 color
scene, how do I allow only the non-black portion of the off screen image 
to be drawn?

thanks,  Tommie Daniel   daniel@unm.edu

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Newsgroups: comp.os.ms-windows.programmer.misc
Path: arc1-ca.pugleaf.net!sparky!uunet!digex.com!intercon!udel!gatech!ncar!mimbres.cs.unm.edu!viper.cs.unm.edu!daniel
From: daniel@viper.cs.unm.edu (Tommie Daniel)
Subject: Transparent BITBLT Raster OP code (ROP) ???
Message-ID: <C1IuC7.8I8@viper.cs.unm.edu>
Keywords: BITBLT
Sender: news@viper.cs.unm.edu
Organization: Computer Science Department, University of New Mexico
Distribution: usa
Date: Wed, 27 Jan 1993 16:40:56 GMT
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