lab7.py 文件源码

def mouseMoveEvent(self, event):
        global now, w
        if w.input_rect:
            if now is None:
                now = event.scenePos()
            else:
                self.removeItem(self.itemAt(now, QTransform()))
                p = event.scenePos()
                self.addRect(now.x(), now.y(), abs(now.x() - p.x()), abs(now.y() - p.y()))