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From: robhenry AT atl DOT mindspring DOT com (Robert Henry)
Newsgroups: comp.os.msdos.djgpp
Subject: Mouse code - What am I doing wrong?
Date: Tue, 09 Jan 1996 03:51:43 GMT
Organization: MindSpring Enterprises, Inc.
Lines: 29
Message-ID: <4cvd2h$etf@brickbat.mindspring.com>
Reply-To: robhenry AT atl DOT mindspring DOT com
NNTP-Posting-Host: user-168-121-70-97.dialup.mindspring.com
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp

I'm trying to use int 33 function C to set up an interrupt handler for
the mouse. The following code causes a GPF when int86x is called.

What an I doing wrong?

void click_handler (_go32_dpmi_registers *r)
{
}

_go32_dpmi_registers regs;
_go32_dpmi_seginfo info;

void init_mouse(void)
{
	struct SREGS sregs;
	union REGS inregs, outregs;

	info.pm_offset = (u_long)click_handler;
	a=_go32_dpmi_allocate_real_mode_callback_retf(&info, &regs);
	if(a!=0)
		abandon_ship("Could not allocate real mode callback for mouse.");
	inregs.x.ax = 0xC;
	inregs.x.cx = 0xFFFF;
	inregs.x.dx = info.rm_offset;
	sregs.es = info.rm_segment;
 	int86x( 0x33, &inregs, &outregs, &sregs);
}