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From: root@johnbob.uucp (/4194303)
Newsgroups: comp.windows.x
Subject: Re: Help with Drawing Pixmaps using Xlib
Keywords: put image putimage
Message-ID: <2791@d75.UUCP>
Date: 6 Oct 89 20:47:40 GMT
References: <39467@bu-cs.BU.EDU> <8910041743.AA07208@expire.lcs.mit.edu>
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Reply-To: root@reed.UUCP (/4194303)
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>In article <8910041743.AA07208@expire.lcs.mit.edu> rws@EXPO.LCS.MIT.EDU (Bob Scheifler) writes:
>>In article ?
>>   Now for a question: what do the GC foreground and background
>>   specifiers do on an XPutImage command?
>>
>They do what you want.  An XYBitmap PutImage is equivalent to your
>sending the data to a bitmap and then using CopyPlane.
>    but the destination must be the same depth (ie 1) so
>    I'm kind of confused as to what they do.
>No such restriction for XYBitmap.

The XYPixmap has the restriction that the src and dst must be the same
depth, and foreground and background are not used.
The XYBitmap must be depth 1 and a putimage color expands with foreground and
background to whatever depth dst is.

O' course I could be wrong...
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John Harvey						    !johnbob
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							    !john
John Harvey						    !johnbob
I don't speak for anybody.  Not even myself.
Please forgive my employers.  They know not what I do.