From:	billynomates AT my-dejanews DOT com
Newsgroups:	comp.os.msdos.djgpp
Subject:	I give up. My mouse function has committed suicide.
Date:	Thu, 22 Oct 1998 20:34:41 GMT
Organization:	Deja News - The Leader in Internet Discussion
Lines:	179
Message-ID:	<70o4t0$l02$1@nnrp1.dejanews.com>
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To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp
Reply-To:	djgpp AT delorie DOT com

Well, I've tried everyone's suggestions and it still doesn't work - I simply
don't know what to do any more. If anyone can take this code (below) and
change those one or two lines that are causing faults, I will be sooooo
happy. I've reached a point whereby I simply can't go any further - I've been
working on one bleeding mouse driver for 4 days now and it still doesn't do
one simple (but important) function. I'm sure some people must have made
mouse drivers - PLEASE PLEASE PLEAAAASE can somebody comile this and tell me
why it doesn't work. I've been happy to get some responses but they don't
solve the problem at all. Thanks, Chris  jsc AT lds DOT co DOT uk
////////////////////////////////// #include <dos.h> #include <bios.h>
#include <stdio.h> #include <math.h> #include <conio.h>


#define far

#define MOUSE_LB    0x01    /* mouse left button */
#define MOUSE_RB    0x02    /* mouse right button */
#define MOUSE_CB    0x04    /* mouse center button */


void InitGraphics(void)
	{
	union REGS regs;
	regs.x.ax = 0x13;
	int86(0x10, &regs,&regs);
	return;
	}

void ExitGraphics(void)
	{
	union REGS regs;
	regs.x.ax = 0x3;
	int86(0x10, &regs,&regs);
	}

void Plot_Pixel(int x, int y, int colour)
{
_farpokeb(_dos_ds, 0xa0000 + ((y<<8) + (y<<6))+ x, colour);
}

int mouse_detect(void)
{
	union REGS regs;

	regs.x.ax = 0x0;
	int86(0x33, &regs, &regs);

	return regs.x.ax;
}

void mouse_show(void)
{
	union REGS regs;

	regs.x.ax = 0x01;
	int86(0x33, &regs, &regs);
}

void mouse_hide(void)
{
	union REGS regs;

	regs.x.ax = 0x02;
	int86(0x33, &regs, &regs);
}

unsigned char mouse_button(unsigned char button)
{
	union REGS regs;

	regs.x.ax = 0x3;
	int86(0x33, &regs, &regs);

	return (regs.x.bx & button);
}


void mouse_abs_pos(short *x, short *y)
{
	union REGS regs;
	regs.x.ax = 0x03;
	int86(0x33, &regs, &regs);
	*x = regs.x.cx;
	*y = regs.x.dx;

	return;
}

int mouse_rel_pos(short *x, short *y)
{
	union REGS regs;

	regs.x.ax = 0xb;
	int86(0x33, &regs, &regs);
	*x = regs.x.cx;
	*y = regs.x.dx;

	return (*x|*y);
}




int main(void)
{

int buttons,num_buttons;
int colour=1;
short x;
short y;
// put the computer into graphics mode

InitGraphics();

// initialize mouse

mouse_detect();

// show the mouse

mouse_show();

while(!kbhit())
     {



	mouse_abs_pos(&x,&y);

	//mouse_rel_pos(&x,&y);

	if(mouse_button(MOUSE_LB))
	{
	Plot_Pixel(x, y, colour);
	}

	if(mouse_button(MOUSE_RB))
	{
	if (++colour>15) colour=0;
	}

	}
ExitGraphics();
return(0);
} // end main
































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