Qt5-控件-QMenu,QMenuBar-菜单栏详解-菜单热键-菜单校验功能

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>
#include <QMenu>
#include <QMenuBar>
#include <QStatusBar>

class MainWindow : public QMainWindow
{
Q_OBJECT

public:
MainWindow(QWidget *parent = 0);
~MainWindow();

QMenu* menu[10];
QAction* act[10];
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(400,300);
this->centralWidget();

status = new QStatusBar(this);

menu[0] = new QMenu("文件");
menu[0]->addAction("编辑");
menu[0]->addAction("查看");
menu[0]->addAction("工具");

act[0] = new QAction("新建",this);
act[0]->setShortcut(Qt::CTRL | Qt::Key_A );
act[0]->setStatusTip("这是一个新建菜单");

act[1] = new QAction("打开",this);
act[1]->setCheckable(true);

menu[1] = new QMenu("保存");
menu[1]->addAction(act[0]);
menu[1]->addAction(act[1]);

menu[2] = new QMenu("打印");
menu[2]->addAction("打印设置");
menu[2]->addMenu(menu[1]);

menuBar = new QMenuBar(this);
menuBar->addMenu(menu[0]);
menuBar->addMenu(menu[2]);
menuBar->setGeometry(0,0,this->width(),30);

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();
}