QMenu的个性化定制

QT中对菜单处理例子： ：

C:\Qt\Qt5.5.1\Examples\Qt-5.5\widgets\mainwindows\menus\menus.pro

QMenu的个性化定制

参考
http://blog.sina.com.cn/s/blog_a6fb6cc90101fxsc.html

http://blog.chinaunix.net/xmlrpc.php?r=blog/index&uid=29181887&cid=184923&pattern=list

C:\Qt\Qt5.5.1\Examples\Qt-5.5\widgets\mainwindows\menus\menus.pro

代码：
mainwindow.h：
#ifndef MAINWINDOW_H
#define MAINWINDOW_H


#include <QMainWindow>


QT_BEGIN_NAMESPACE
class QAction;
class QActionGroup;
class QLabel;
class QMenu;
QT_END_NAMESPACE


//! [0]
class MainWindow : public QMainWindow
{
    Q_OBJECT


public:
    MainWindow();


protected:
    void contextMenuEvent(QContextMenuEvent *event) Q_DECL_OVERRIDE;
//! [0]


//! [1]
private slots:
    void newFile();
    void open();
    void save();
    void print();
    void undo();
    void redo();
    void cut();
    void copy();
    void paste();
    void bold();
    void italic();
    void leftAlign();
    void rightAlign();
    void justify();
    void center();
    void setLineSpacing();
    void setParagraphSpacing();
    void about();
    void aboutQt();
//! [1]


//! [2]
private:
    void createActions();
    void createMenus();
//! [2]


//! [3]
    QMenu *fileMenu;
    QMenu *editMenu;
    QMenu *formatMenu;
    QMenu *helpMenu;
    QActionGroup *alignmentGroup;
    QAction *newAct;
    QAction *openAct;
    QAction *saveAct;
    QAction *printAct;
    QAction *exitAct;
    QAction *undoAct;
    QAction *redoAct;
    QAction *cutAct;
    QAction *copyAct;
    QAction *pasteAct;
    QAction *boldAct;
    QAction *italicAct;
    QAction *leftAlignAct;
    QAction *rightAlignAct;
    QAction *justifyAct;
    QAction *centerAct;
    QAction *setLineSpacingAct;
    QAction *setParagraphSpacingAct;
    QAction *aboutAct;
    QAction *aboutQtAct;
    QLabel *infoLabel;
};
//! [3]


#endif




mainwindow.cpp ：
#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <QFileDialog>
#include <QTextStream>


#include <QDomNode>
#include <QHash>
#include <QAbstractItemModel>
#include <QDomDocument>
#include <QModelIndex>
#include <QString>
#include <QDebug>
#include <QMap>
#include <QMessageBox>
#include <QContextMenuEvent>


QT_BEGIN_NAMESPACE
class QMenu;
class QTreeView;
class QWidgetAction;
class QContextMenuEvent;
QT_END_NAMESPACE


MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);


    this->createActions_0();
    this->creatActions_1();
    this->addActions();


    connect(ui->pushButton_4,SIGNAL(clicked()),this,SLOT(pushButton_4Slot()));
}


MainWindow::~MainWindow()
{
    delete ui;
}


void MainWindow::createActions_0()
{
    myAllMenu = new QMenu();


    show_action_0 = new QAction("show_action_0",myAllMenu);


    show_action_1 = new QAction("show_action_1",myAllMenu);
    show_action_2 = new QAction("show_action_2",myAllMenu);


    connect(show_action_0, SIGNAL(triggered()), this, SLOT(show_action_0_slot()));
    connect(show_action_1, SIGNAL(triggered()), this, SLOT(show_action_1_slot()));
    connect(show_action_2, SIGNAL(triggered()), this, SLOT(show_action_2_slot()));
}


void MainWindow::show_action_1_slot()
{
    QMessageBox msgBox;
    msgBox.setText("show_action_1_slot");
    msgBox.exec();
}
void MainWindow::show_action_2_slot()
{
    QMessageBox msgBox;
    msgBox.setText("show_action_2_slot");
    msgBox.exec();
}
void MainWindow::show_action_0_slot()
{
    QMessageBox msgBox;
    msgBox.setText("show_action_0_slot.");
    msgBox.exec();
}


void MainWindow::pushButton_4Slot()
{


}


void MainWindow::contextMenuEvent(QContextMenuEvent *event)
{
    myAllMenu->exec(event->globalPos());
    //myAllMenu->exec(event->pos());
//    QMenuBar * menuBar;
//    menuBar->addMenu(pop_menu);
    //this->setMenuBar(pop_menu);
    //this->setMenuBar(menuBar);
}


void MainWindow::creatActions_1()
{
    play_widget = new QWidget();
    play_widget_action = new QWidgetAction(myAllMenu);


    button0 = new QPushButton("button0");
    button1 = new QPushButton("button1");
    button2 = new QPushButton("button2");


    QLineEdit *lineEdit0=new QLineEdit("lineEdit0");
    QComboBox *ComboBox0=new QComboBox();
    ComboBox0->addItem("ComboBox0-items0");
    ComboBox0->addItem("ComboBox0-items1");
    ComboBox0->addItem("ComboBox0-items2");
    ComboBox0->setCurrentIndex(1);




    label0 = new QLabel("label0");


    label0->setText("player");
    label0->setEnabled(false);


    label0->setFixedWidth(20);
    label0->setAlignment(Qt::AlignCenter);


    button0->setObjectName("button0");
    button1->setObjectName("button1");
    button2->setObjectName("button2");


    QHBoxLayout *hlayout = new QHBoxLayout();


    hlayout->addWidget(button0);
    hlayout->addWidget(button1);
    hlayout->addWidget(button2);
    hlayout->addWidget(lineEdit0);
    hlayout->addWidget(ComboBox0);


    hlayout->setSpacing(0);
    hlayout->setContentsMargins(20, 0, 20, 0);


    QVBoxLayout *vlayout = new QVBoxLayout();


    vlayout->addLayout(hlayout);
    vlayout->addWidget(label0, 0, Qt::AlignCenter);


    vlayout->setSpacing(5);
    vlayout->setContentsMargins(0, 0, 0, 5);


    play_widget->setLayout(vlayout);
    play_widget_action->setDefaultWidget(play_widget);


    play_widget->show();


    connect(button0, SIGNAL(clicked()), this, SLOT(button0_slot()));
    connect(button1, SIGNAL(clicked()), this, SLOT(button1_slot()));
    connect(button2, SIGNAL(clicked()), this, SLOT(button2_slot()));
}


void MainWindow::button0_slot()
{
    QMessageBox msgBox;
    msgBox.setText("button0_slot.");
    msgBox.exec();
}
void MainWindow::button1_slot()
{
    QMessageBox msgBox;
    msgBox.setText("button1_slot.");
    msgBox.exec();
}
void MainWindow::button2_slot()
{
    QMessageBox msgBox;
    msgBox.setText("button2_slot.");
    msgBox.exec();
}


void MainWindow::addActions()
{
    myAllMenu   = menuBar()->addMenu(tr("&pop_menu"));
    myAllMenu->addAction(play_widget_action);


    myAllMenu->addSeparator();
    myAllMenu->addAction(show_action_0);
    myAllMenu->addSeparator();
    myAllMenu->addAction(show_action_1);
    myAllMenu->addAction(show_action_2);
}


main.cpp ：
#include "mainwindow.h"
#include <QApplication>


int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    MainWindow w;
    w.show();


    return a.exec();
}