Thread View: comp.windows.ms.programmer
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Started by sampson david 58163
Wed, 31 Oct 1990 17:49
Displaying GIF images in windows
Author: sampson david 58163
Date: Wed, 31 Oct 1990 17:49
Date: Wed, 31 Oct 1990 17:49
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I was playing around with the WinGIF program last night. I don't recall seeing anything in the SDK manuals about importing images in this file format. Does anybody know how to bridge between bitmaps (bmp format) and the GIF file format? dfs -- I I n ------------------------ I I n ------------------------ I I n ------------------------ I I n ------------------------ It takes alot of patience to train a turtle. / I I n ------------------------ David Sampson Harris Corporation dsampson@x102a.ess.harris.com Gov't Aerospace Systems Divison uunet!x102a!dsampson Melbourne, Florida -------------------------------------------------------------------------------
Re: Displaying GIF images in windows
Author: In Sik Rhee
Date: Wed, 31 Oct 1990 19:47
Date: Wed, 31 Oct 1990 19:47
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In article <DSAMPSON.90Oct31124927@x102a.harris-atd.com> dsampson@x102a.harris-atd.com (sampson david 58163) writes: >I was playing around with the WinGIF program last night. I don't >recall seeing anything in the SDK manuals about importing images in >this file format. Does anybody know how to bridge between bitmaps >(bmp format) and the GIF file format? > Well, I hope I can answer your question. At this point, I'm 99% finished with my GIF->BMP->METAFILE filter (PageMaker Standard, so it's compatible with Word for Windows, PageMaker, etc etc) SDK does not have ANY support whatsoever for a GIF. you, the super-duper programmer-from-hell, must undertake the task... it's not so bad, once you get over hacking the LZW to make it work just right... basically, what you have to do is a GIF->BMP , and just download the GIF specs from compuserve, and you're pretty much all set... just remember to use logical palettes and everything... As it stands, my program will allow the user to import a 256-color .GIF file (I usually try 640x480 or 320x200, but any imagesize should work), and then proceed to scale the thing, or zoom in on a portion... (scale only refers to stretch/shrink along the x/y axis, no skewing, etc (yet!)) Unfortunately, it's commercial code, so I cant give it out freely... but, if you have any specific questions about DIB's (Device Independent Bitmaps) or GIF format specs, I'd be happy to answer them for you...
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