Bitmap_pad parameter in XCreateImage

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Article #37217

#37217

From: John Cristy
Date: Thu, 22 Feb 1990 17:32

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  Should the bitmap_pad parameter in the XCreateImage routine match the 
  value of XBitmapPad(display)?  On an Ardent Titan, using a PseudoColor 
  visual, if the bitmap_pad parameter is 8 instead of 32 (as returned 
  from XBitmapPad(display), 3 pixels at the end of each scanline have random 
  values (image is 512x512).  If I change the bitmap pad to 32, the last 
  few bytes of the scanline are black.
   
  I would perfer to leave the bitmap pad at 8 so when I create the image
  I do not need to take into account the extra padding at the end of
  each scanline (extra code).  But if it is recommended to make the
  bitmap_pad parameter the same as XBitmapPad(display) I will write the
  extra code required.

  Thanks in adabance for your help.

   
--
The UUCP Mailer

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Message-ID: <1990Feb22.173227.15269@eplrx7.uucp>

Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!usc!wuarchive!udel!eplrx7!cristy

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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!usc!wuarchive!udel!eplrx7!cristy
From: cristy@eplrx7.uucp (John Cristy)
Newsgroups: comp.windows.x
Subject: Bitmap_pad parameter in XCreateImage
Message-ID: <1990Feb22.173227.15269@eplrx7.uucp>
Date: 22 Feb 90 17:32:27 GMT
Sender: usenet@udel.EDU
Reply-To: cristy@eplrx7.UUCP (John Cristy)
Distribution: usa
Organization: DuPont Engineering Physics Lab
Lines: 19