INT 33,5 - Get Mouse Button Press Information

AX = 5

BX = 0 left button

1 right button

on return:

BX = count of button presses (0-32767), set to zero after call

CX = horizontal position at last press

DX = vertical position at last press

AX = status:

¦F-8¦7¦6¦5¦4¦3¦2¦1¦0¦ Button Status

¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦ +---- left button (1 = pressed)

¦ ¦ ¦ ¦ ¦ ¦ ¦ +----- right button (1 = pressed)

+------------------- unused