作业

代码

class Widget: public QWidget
{QPushButton* button;    //按钮Widget* other;          //显示对面
public:Widget(){button = new QPushButton("按钮",this);     //控件 认this作父this->resize(300,300);      //界面大小button->resize(100,100);    //按钮大小QObject::connect(button,&QPushButton::clicked,this,&Widget::Clicked_Event);}// 按钮点击事件void Clicked_Event(){this->hide();   //隐藏自己other->show();  //显示对面}// 绑定窗口     仅允许两个窗口相互绑定,所以返回值voidvoid operator==(Widget& other){this->other = &other;other.other = this;}
};int main(int argc, char *argv[]) {QApplication app(argc, argv);  // 创建 QApplicationWidget w1 , w2; //创建界面w1 == w2;       //界面绑定w1.show();return app.exec();             // 启动事件循环
}

效果