思维导图

写1个Widget窗口，窗口里面放1个按钮，按钮随便叫什么 创建2个Widget对象 Widget w1,w2 w1.show() w2不管 要求：点击 w1.btn ,w1隐藏，w2显示 点击 w2.btn ,w2隐藏，w1 显示

#include <QApplication>
#include <QDebug>
#include <QLabel>
#include <QPalette>
#include <QLineEdit>
#include <QPushButton>
#include <QHBoxLayout>
#include <QLayout>
#include <QWidget>
#include <QTextEdit>
using namespace std;class Widget:public QWidget{QPushButton* btn;Widget* other;public:Widget():btn(NULL),other(NULL){btn = new QPushButton(this);btn->setText("按钮");QObject::connect(btn,&QPushButton::clicked,this,&Widget::Event);}void Event(){this->hide();other->show();}void operator==(Widget& other){this->other=&other;other.other=this;}
};
int main(int argc,char** argv)
{QApplication app(argc,argv);//QT应用程序的入口类Widget w1,w2;w1==w2;w1.show();return app.exec();
}