Mail Archives: djgpp/1996/11/06/03:47:31
Newsgroups: | comp.os.msdos.djgpp
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From: | mksmith AT idirect DOT com (Martin Smith)
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Subject: | Help re. Interrupt 0x33 & 32 bit pointers.
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MIME-Version: | 1.0
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Reply-To: | mksmith AT idirect DOT com
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Message-ID: | <Edina1996Nov6.003932.20748@oasis.idirect.com.compulink.com>
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Date: | 6 Nov 96 05:39:32 UTC
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Sender: | @chaos.idirect.com
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Lines: | 21
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To: | djgpp AT delorie DOT com
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DJ-Gateway: | from newsgroup comp.os.msdos.djgpp
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I am rewriting some old code which sets a graphics mouse cursor
via a call to DOS interrupt 0x33. In the bad old days (the
days of SEGMENT:OFFSET), I could do this sort of thing:
unsigned short ScreenMaskArray[32];
union REGS registers;
registers.ax = 9; //to set the graphics cursor bitmap
...
registers.dx = ofset(ScreenMaskArray);
registers.es = segment(ScreenMaskArray); // THIS doesn't work
CallInterrupt(0x33, ®isters, ®isters);
I can't get this to work, because I can't translate a 32-bit pointer to
the ScreenMaskArray into anything that DOS can understand. What can be
done?
{Getting the mouse calls to work is secondary to my learning how to
deal with this kind of problem if it arises again.}
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