#ifndef MAINWINDOW_H

#define MAINWINDOW_H

#include <QMainWindow>

#include <QMenu>

#include <QMenuBar>

#include <QStatusBar>

class MainWindow : public QMainWindow

{

    Q_OBJECT

public:

    MainWindow(QWidget *parent = );

    ~MainWindow();

    QMenu* menu[];

    QAction* act[];

    QMenuBar* menuBar ;

    QStatusBar* status ;

public slots:

    void trigerMenu(QAction* act);

};

#endif // MAINWINDOW_H

#include "mainwindow.h"

#include <Qt>

#include <QtDebug>

MainWindow::MainWindow(QWidget *parent)

    : QMainWindow(parent)

{

    this->resize(,);

    this->centralWidget();

    status = new QStatusBar(this);

    menu[] = new QMenu("文件");

    menu[]->addAction("编辑");

    menu[]->addAction("查看");

    menu[]->addAction("工具");

    act[] = new QAction("新建",this);

    act[]->setShortcut(Qt::CTRL | Qt::Key_A );

    act[]->setStatusTip("这是一个新建菜单");

    act[] = new QAction("打开",this);

    act[]->setCheckable(true);

    menu[] = new QMenu("保存");

    menu[]->addAction(act[]);

    menu[]->addAction(act[]);

    menu[] = new QMenu("打印");

    menu[]->addAction("打印设置");

    menu[]->addMenu(menu[]);

    menuBar = new QMenuBar(this);

    menuBar->addMenu(menu[]);

    menuBar->addMenu(menu[]);

    menuBar->setGeometry(,,this->width(),);

    connect(menuBar,SIGNAL(triggered(QAction*)),this,SLOT(trigerMenu(QAction*)));

}

MainWindow::~MainWindow()

{

}

void MainWindow::trigerMenu(QAction* act)

{

    if(act->text() == "新建")

    {

        qDebug()<<"新建菜单被按下";

    }

}

#include "mainwindow.h"

#include <QApplication>

int main(int argc, char *argv[])

{

    QApplication a(argc, argv);

    MainWindow w;

    w.show();

    return a.exec();

}