public Custom_QLabel: public QLabel{声明信号click();public void MouseDownEvent(...)public void MouseUpEvent(...)public void MouseMoveEvent(...)private: bool isClicked; }public void MouseDownEvent(...){isClicked= TRUE;}public void MouseUpEvent(...){ if(isClicked) { emit clicked(); isClicked = FALSE; }}public void MouseMoveEvent(...){ isClicked= FALSE;}
这是响应的怎么解释
