本文详细的介绍了QMenuBra QMenu QAction 菜单栏的各种操作，例如操作：新建界面、加入菜单项、加入子菜单、新建二级子菜单、QAction分隔符、pMenuBar、点击信号、触发信号、设置图标、设置禁用、设置提示语 等操作

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QT QMenuBra QMenu QAction 菜单栏 操作详解目录

1新建界面

2 加入菜单项

 3 加入子菜单

4 新建二级子菜单

5 QAction分隔符

 6 pMenuBar

7 点击信号

 8 触发信号

 9 设置图标

 10 设置禁用

 11 设置提示语

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QMenuBar： 就是所有窗口的菜单栏，在此基础上添加不同的QMenu和QAction

QMenu： 菜单栏里面菜单，可以显示文本和图标，但是并不负责执行操作，有点类似label的作用

QAction： Qt 将用户与界面进行交互的元素抽象为一种“动作”，使用QAction类表示。QAction才是真正负责执行操作的部件。

1新建界面

         刚创建的界面有自带的QMenuBar所以不需要在次创建

2 加入菜单项

    /* 菜单项 */
    QMenu *m_menuFile;
    QMenu *m_menuEdit;
    QMenu *m_menuView;
    QMenu *m_menuProject;
    QMenu *m_menuTest;

    /* 菜单项 窗口获得焦点时按alt+n即可打开"文件"菜单项,(&)快捷方式 */
    m_menuFile = new QMenu("文件(&F)");
    m_menuEdit = new QMenu("编辑(&E)");
    m_menuView = new QMenu("视图(&V)");
    m_menuProject = new QMenu("项目(&P)");
    m_menuTest = new QMenu("调试(&D)");

    //菜单项添加调试子菜单
    m_menuTest->addAction(m_actionWindow);
    m_menuTest->addAction(m_actionGraphics);
    m_menuTest->addAction(m_actionWindow_);
    m_menuTest->addAction(m_actionPerformance);

 3 加入子菜单

    /* 子菜单 */
    // 文件子菜单
    QAction *m_actionNewFile;
    QAction *m_actionOpen;
    QAction *m_actionInitial;
    // 编辑子菜单
    QAction *m_actionConversion;
    QAction *m_actionFind;
    QAction *m_actionWithdraw;
    // 视图子菜单
    QAction *m_actionViewPlan;
    QAction *m_actionViewTeam;
    QAction *m_actionViewService;
    // 项目子菜单
    QAction *m_actionTemp;
    // 调试子菜单
    QAction *m_actionWindow;
    QAction *m_actionGraphics;
    QAction *m_actionPerformance;


    /* 定义子菜单 (&)为子菜单快捷键*/
    //文件子菜单
    m_actionNewFile = new QAction("新建(&N)");
    m_actionOpen = new QAction("打开(&O)");
    m_actionInitial = new QAction(QIcon(":/new/prefix1/resource/soccer_ball.ico"),"初始页(&E)");
    //编辑子菜单
    m_actionConversion = new QAction("转到(&G)");
    m_actionFind = new QAction("查找&替换(&F)");
    m_actionWithdraw = new QAction("撤销(&U)");
    //视图子菜单
    m_actionViewPlan = new QAction("解决方案资源管理器(&P)");
    m_actionViewTeam = new QAction("团队资源管理器(&M)");
    m_actionViewService = new QAction("服务器资源管理器(&V)");
    //项目子菜单
    m_actionTemp = new QAction("导出模板(&E)");
    //调试子菜单
    m_actionWindow = new QAction("窗口(&W)");
    m_actionGraphics = new QAction("图形(&C)");
    m_actionWindow_ = new QAction();
    m_actionPerformance = new QAction("性能探查器(&F)");

    //菜单项添加文件子菜单
    m_menuFile->addAction(m_actionNewFile);
    m_menuFile->addAction(m_actionOpen);
    m_menuFile->addAction(m_actionInitial);
    //菜单项添加编辑子菜单
    m_menuEdit->addAction(m_actionConversion);
    m_menuEdit->addAction(m_actionFind);
    m_menuEdit->addAction(m_actionWithdraw);
    //菜单项添加视图子菜单
    m_menuView->addAction(m_actionViewPlan);
    m_menuView->addAction(m_actionViewTeam);
    m_menuView->addAction(m_actionViewService);
    //菜单项添加项目子菜单
    m_menuProject->addAction(m_actionTemp);

    //菜单项添加调试子菜单
    m_menuTest->addAction(m_actionWindow);
    m_menuTest->addAction(m_actionGraphics);
    m_menuTest->addAction(m_actionWindow_);
    m_menuTest->addAction(m_actionPerformance);

4 新建二级子菜单

    //二级子菜单
    QMenu * m_menu_new;
    QMenu * m_menu_open;
    QMenu * m_menu_conversion;
    QMenu * m_menu_find;
    QMenu * m_menu_window;
    QMenu * m_menu_graphics;

    m_menu_new      = new QMenu();
    m_menu_open         = new QMenu();
    m_menu_conversion   = new QMenu();
    m_menu_find         = new QMenu();
    m_menu_window       = new QMenu();
    m_menu_graphics     = new QMenu();


    /** 编辑子菜单 二级菜单菜单子项 */
    QAction *m_menu_conversion_con      = new QAction(m_menu_conversion);
    QAction *m_menu_conversion_all      = new QAction(m_menu_conversion);
    QAction *m_menu_conversion_file     = new QAction(m_menu_conversion);
    QAction *m_menu_conversion_ufile    = new QAction(m_menu_conversion);
    QAction *m_menu_conversion_type     = new QAction(m_menu_conversion);
    QAction *m_menu_conversion_members  = new QAction(m_menu_conversion);
    QAction *m_menu_conversion_symbol   = new QAction(m_menu_conversion);
    QAction *m_menu_conversion_back     = new QAction(m_menu_conversion);
    QAction *m_menu_find_f  = new QAction(m_menu_find);
    QAction *m_menu_find_r  = new QAction(m_menu_find);
    QAction *m_menu_find_l  = new QAction(m_menu_find);
    QAction *m_menu_find_s  = new QAction(m_menu_find);

    m_menu_conversion_con->setText("转到(&G)...");
    m_menu_conversion_all->setText("转到所有(&G)...");
    m_menu_conversion_file->setText("转到文件(&F)...");
    m_menu_conversion_ufile->setText("转到最近的文件(&R)...");
    m_menu_conversion_type->setText("转到类型(&T)...");
    m_menu_conversion_members->setText("转到成员(&M)...");
    m_menu_conversion_symbol->setText("转到符号(&S)...");
    m_menu_conversion_back->setText("转到上一个编辑位置...");
    m_menu_find_f->setText("快速查找(&F)...");
    m_menu_find_r->setText("快速替换(&R)...");
    m_menu_find_l->setText("在文件中查找(&I)...");
    m_menu_find_s->setText("在文件中替换(&S)...");

    m_menu_conversion->addAction(m_menu_conversion_con);
    m_menu_conversion->addAction(m_menu_conversion_all);
    m_menu_conversion->addAction(m_menu_conversion_file);
    m_menu_conversion->addAction(m_menu_conversion_ufile);
    m_menu_conversion->addAction(m_menu_conversion_type);
    m_menu_conversion->addAction(m_menu_conversion_members);
    m_menu_conversion->addAction(m_menu_conversion_symbol);
    m_menu_conversion->addAction(m_menu_conversion_back);
    m_menu_find->addAction(m_menu_find_f);
    m_menu_find->addAction(m_menu_find_r);
    m_menu_find->addAction(m_menu_find_l);
    m_menu_find->addAction(m_menu_find_s);

    /** 调试子菜单 二级菜单菜单子项 */
    QAction *m_menu_window_T     = new QAction(m_menu_window);
    QAction *m_menu_graphics_I  = new QAction(m_menu_graphics);
    QAction *m_menu_graphics_X  = new QAction(m_menu_graphics);

    m_menu_window_T->setText("显示诊断工具(&T)...");
    m_menu_graphics_I->setText("对安装的应用启动图形调试(&I)...");
    m_menu_graphics_X->setText("DirectX控制面板(&X)...");

    m_menu_window->addAction(m_menu_window_T);
    m_menu_graphics->addAction(m_menu_graphics_I);
    m_menu_graphics->addAction(m_menu_graphics_X);

    //设置子菜单 m_actionGraphics
    m_actionWindow->setMenu(m_menu_window);
    m_actionGraphics->setMenu(m_menu_graphics);

5 QAction分隔符

        菜单栏加入一个QAction将QAction的属性设置为true则可以将菜单项改变为分隔符

     //在菜单项之间添加分割线
     m_actionWindow_->setSeparator(true);

 6 pMenuBar

        pMenuBar 代码创建菜单栏 (当不使用QMainWindow自带的菜单栏时，必须要加上此行)

    //setMenuBar(pMenuBar);

7 点击信号

private slots:
    void s_menuPro();

    void s_menuFile();


connect(m_menu_new_pro,SIGNAL(triggered()),SLOT(s_menuPro()));
connect(m_menu_new_file,SIGNAL(triggered()),SLOT(s_menuFile()));

void MainWindow::s_menuPro()
{
    qDebug() << "新建项目 槽函数触发";
}

void MainWindow::s_menuFile()
{
    qDebug() << "新建文件 槽函数触发";
}

 8 触发信号

private slots:
    void s_menu_window_t();

connect(m_menu_window_T,SIGNAL(hovered()),SLOT(s_menu_window_t()));

void MainWindow::s_menu_window_t()
{
    qDebug() << "诊断工具 鼠标触发 槽函数触发";
}

 9 设置图标

m_actionNewFile->setIcon(QIcon("D:/ico.png"));

//另外写法
//m_actionNewFile->setIcon(QIcon("D:/ico.png"),"setText");

 10 设置禁用

m_actionNewFile->setEnabled(false);

 11 设置提示语

m_actionNewFile->setStatusTip("提示语");