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Article View: comp.os.msdos.programmer
Article #7439

Help! Microsoft QuickC for Windows + BITMAPS problem!?

#7439
From: Michael B. Comet
Date: Mon, 04 Jan 1993 17:29
29 lines
1795 bytes

	I have recently been working on a graphics viewer in microsoft
quickc for windows.  No major problems as I have written one for DOS
allready.  

	To speed up the drawing and updating of the windows, I am using
the CreateBitmapIndirect() function and the StrechBlt() function to
display the bitmaps.  I have ran into a problem though where bitmaps say
640x480 have weird horizontal shifts though starting about 100 lines in
and every 100 lines or so.  Does anyone know of a problem with the
standard bitmap format for files bigger than 64k?  The program looks
fine for 320x200 images.  Also, I have tested my decompression by put
code to view what's decompressed as it decodes an image line by line
using the SetPixel() function.

	Any help would be appreciated.  Is there a better way to display
a bitmap?  I am used to using a direct ptr to the screen in DOS, but I
don't think that's going to work in windows....plus I don't want to have
to worry about which SVGA card is in use etc...

	Thanks.

 
-- 
+======================================================================+
|  Michael B. Comet - Computer Programmer / Graphics Artist  - CWRU    |
|  mbc@po.CWRU.Edu  - "IF THEN THEN THEN = ELSE ELSE ELSE = THEN"      |
+======================================================================+
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From: mbc@po.CWRU.Edu (Michael B. Comet)
Newsgroups: comp.os.msdos.programmer
Subject: Help!  Microsoft QuickC for Windows + BITMAPS problem!?
Date: 4 Jan 1993 17:29:08 GMT
Organization: Case Western Reserve University, Cleveland, OH (USA)
Lines: 29
Message-ID: <1i9s54INNek5@usenet.INS.CWRU.Edu>
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