QT菜单栏绑定槽--执行事件

 

#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <QMessageBox>

MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
    , ui(new Ui::MainWindow)
{
    ui->setupUi(this);
    connect(ui->action_about,&QAction::triggered,this,[=]()
    {
         QMessageBox::information(this,tr("关于"),"合作联系：txwtech@163.com");
    });
    connect(ui->action_open,&QAction::triggered,this,[=]()
    {

    });
    connect(ui->action_exit,&QAction::triggered,this,[=]()
    {
         QMessageBox::information(this,tr("tips"),"即将退出");
         close();
    });

   // {


  //  };


}

MainWindow::~MainWindow()
{
    delete ui;
}
//void MainWindow::on_action_about_clicked()
//{
 // connect(ui->action_about,SIGNAL(triggered()),this,SLOT(show_message));
//}
void MainWindow::show_message()
{
     QMessageBox::information(this,tr("关于"),"合作联系123：txwtech@163.com");
     QMessageBox::information(this,tr("tips"),"关于宇宙的故事");
}
void MainWindow::on_menu_About_triggered()
{
    connect(ui->menuAbout,SIGNAL(triggered()),this,SLOT(show_message));
}


void MainWindow::on_action_open_triggered()
{
   QMessageBox::information(this,tr("关于"),"点击了打开");
}

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>

QT_BEGIN_NAMESPACE
namespace Ui { class MainWindow; }
QT_END_NAMESPACE

class MainWindow : public QMainWindow
{
    Q_OBJECT

public:
    MainWindow(QWidget *parent = nullptr);
    ~MainWindow();

private:
    Ui::MainWindow *ui;
private slots:
    //void on_amenubar_clicked();
    //void on_action_about_clicked();
    void show_message();
    void on_menu_About_triggered();
    void on_action_open_triggered();
};
#endif // MAINWINDOW_H