Article View: comp.os.msdos.programmer
Article #7439Help! Microsoft QuickC for Windows + BITMAPS problem!?
From: Michael B. Comet
Date: Mon, 04 Jan 1993 17:29
Date: Mon, 04 Jan 1993 17:29
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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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Path: arc1-ca.pugleaf.net!sparky!uunet!spool.mu.edu!agate!usenet.ins.cwru.edu!po.CWRU.Edu!mbc 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> Reply-To: mbc@po.CWRU.Edu (Michael B. Comet) NNTP-Posting-Host: slc12.ins.cwru.edu