🚀 go-pugleaf

Thus spake $dougn@sasb.byu.edu (Douglas R. Nebeker - MIS_SAS):
>I am trying to hook the mouse interrupts so that each time the mouse is 
>moved, my routine can be notified.  I've tried hooking Int 33h, [...]
Instead of doing that, try this:

[..other mouse code removed..]

/*  Define interrupt subroutine parameters - This function allows you to
	specify your own interrupt routine to take over the handling of mouse
	activities when any given event specified by the bit mask in event
	occurs.
		Call mask : Word whose first five bits indicate on which events
		the interrupt should be invoked.
			0    Mouse moves
			1    Left mouse button pressed
			2    Left mouse button released
			3    Right mouse button pressed
			4    Right mouse button released
*/

void install_mouse_interrupt(void far *mouse_handler, int callmask) {

	asm    mov  ax,12;            /* Install user-interrupt service */
	asm    mov  cx,callmask
	asm    mov  dx, mouse_handler
	asm    mov  es, dx
	asm    mov  dx, mouse_handler+2
	asm    int  0x33
}

This should work just fine.  You can use it like this:


#include <conio.h>
#include "mouse.h"

void far mouse_handler(void) {
	/*  Your code here */
	/*  Note that this is not an ISR; it is a simple function */
	return;
}

int main(void) {
	install_mouse_interrupt(mouse_handler, 31);  /* all events trapped */
	getch();
	putch(7);
	install_mouse_interrupt(mouse_handler, 0);  /* disable trapping */
	return 0;
}

>Thanks in advance for ANY help!

If you would like the rest of the mouse routines (though they are
fairly simple) send me email.

>Douglas R. Nebeker         Internet: $dougn@sasb.byu.edu

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