chuột

int bit_get(int num, int pos)
{
  return (num>>pos)&1;
}

void bit_set(int *num, int pos)
{
  *num|(1 << pos);
}
int initmouse()
{
  _AX = 0;
  geninterrupt(0x33);
  if (_AX == 0) return _AX; else return _BX;
}

void showmouse()
{
  _AX = 1;
  geninterrupt(0x33);
}

void hidemouse()
{
  _AX = 2;
  geninterrupt(0x33);
}

void getXY(int *mouseX, int *mouseY)
{
  _AX = 3;
  geninterrupt(0x33);
  *mouseX = _CX;
  *mouseY = _DX;
}

int left_down()
{
  _AX = 3;
  geninterrupt(0x33);
  return bit_get(_BX, 0);
}

int right_down()
{
  _AX = 3;
  geninterrupt(0x33);
  return bit_get(_BX, 1);
}
/*
void move(int mouseX, int mouseY)
{
  _AX = 4;
  _CX = mouseX;
  _DX = mouseY;
  geninterrupt(0x33);
}
*/
void setX(int start, int end)
{
  _AX = 7;
  _CX = start;
  _DX = end;
  geninterrupt(0x33);
}

void setY(int start, int end)
{
  _AX = 8;
  _CX = start;
  _DX = end;
  geninterrupt(0x33);
}

int left_up()
{
  int fx, fy, lx, ly;
  _BX = 0;
  _AX = 6;
  geninterrupt(0x33);
  if (_BX == 1)
  {
    fx = _CX; fy = _DX;
    getXY(&lx, &ly);
    if ((fx == lx)&(fy == ly)) return 1; else return 0;
  } else return 0;
}

int right_up()
{
  int fx, fy, lx, ly;
  _BX = 1;
  _AX = 6;
  geninterrupt(0x33);
  if (_BX == 1)
  {
    fx = _CX; fy = _DX;
    getXY(&lx, &ly);
    if ((fx == lx)&(fy == ly)) return 1; else return 0;
  } else return 0;
}