mx = -((int)event.xmotion.x - mwx);

						mx += ((int)event.xmotion.x - mwx);

						my = -((int)event.xmotion.y - mwy);

						my += ((int)event.xmotion.y - mwy);

						mwx = event.xmotion.x;

						mwy = event.xmotion.y;