void cursor_on( void )
{
 asm{
  mov ax,01h          // function call for mouse cursor on //
  int 33h
 }
}

void get_sysmouse(unsigned int *mptr)
{
 unsigned int posx,posy;
 unsigned int button;

 asm{
  mov ax, 03h
  int 33h

  mov button, bx
  mov posx,   cx
  mov posy,   dx
 }

 *mptr=button;
 *(mptr+1)=posx;
 *(mptr+2)=posy;
}