🚀 go-pugleaf

Here is a very short routine which illustrates how to position the cursor.
It is written in Think C.  I'll make no judgements regarding who should and
who shouldn't have this knowledge.  Enjoy, all.

joe holt


---------- CUT HERE FOR MOUSETO.H ----------


/**************************************************************************
 ***
 *** MouseTo.h
 ***
 *** Position mouse to absolute screen location
 ***
 *** History:
 ***  jhh    jan 90 -- quickie pass
 ***
 ***/


#ifndef _H_MOUSETO
#define _H_MOUSETO

/**************************************************************************
 **
 **	Public Functions
 **
 **/

void
MouseTo(int x, int y);


#endif  /* ifndef _H_MOUSETO */

---------- CUT HERE FOR MOUSETO.C ----------

#include "MouseTo.h"


extern Point            MTemp : 0x828;
extern Point            RawMouse : 0x82C;
extern unsigned char    CrsrNew : 0x8CE;
extern unsigned char    CrsrCouple : 0x8CF;


/**************************************************************************
 ***
 *** void	MouseTo(int x, int y);
 ***
 *** Move the mouse cursor to <x>, <y>.  Takes effect immediately.
 ***
 *** History:
 ***   jhh    jan 90 -- quickie pass based on Apple docs
 ***
 ***/

void
MouseTo(int x, int y)
{
    asm {
        move.w  y, D0           ; new vertical position
        swap    D0
        move.w  x, D0           ; new horizontal position
        move.l  D0, MTemp
        move.l  D0, RawMouse
        move.b  CrsrCouple, CrsrNew
    }
}