Qt---自定义菜单

一、右键菜单

右键菜单实现：通过重写contextMenuEvent(QContextMenuEvent *event)事件，QMenu+QAction即可完美实现！

重写voidcontextMenuEvent(QContextMenuEvent*event)事件

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void Form::contextMenuEvent(QContextMenuEvent *event)

{

    //创建菜单、菜单项

    QMenu *pop_menu = new QMenu();

    QAction *add_images_action = new QAction(this);

    QAction *add_folder_action = new QAction(this);

    QAction *remove_selected_action = new QAction(this);

    QAction *remove_all_action = new QAction(this);

    add_images_action->setText(tr("add images"));

    add_folder_action->setText(tr("add folder"));

    remove_selected_action->setText(tr("remove selected images"));

    remove_all_action->setText(tr("remove all images"));

    //清除原有菜单

    pop_menu->addAction(add_images_action);

    pop_menu->addAction(add_folder_action);

    pop_menu->addAction(remove_selected_action);

    pop_menu->addAction(remove_all_action);

    //菜单出现的位置为当前鼠标的位置

    pop_menu->exec(QCursor::pos());

}

二、按钮菜单

使用QPushButton(QToolButton)+QMenu+QAction即可完美实现！

界面拖入一个pushButton按钮；代码实现

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QMenu *remove_menu = new QMenu();

 QAction *remove_selected_action = new QAction(remove_menu);

 QAction *remove_all_action = new QAction(remove_menu);

 remove_menu->addAction(remove_selected_action);

 remove_menu->addAction(remove_all_action);

 ui->pushButton->setMenu(remove_menu);

 ui->pushButton->setText(tr("remove"));

 remove_selected_action->setText(tr("remove selected watermarks"));

 remove_all_action->setText(tr("remove all watermarks"));

三、托盘菜单

托盘菜单实现：通过QSystemTrayIcon+QMenu+QAction实现；

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QSystemTrayIcon *system_tray = new QSystemTrayIcon();

//放在托盘提示信息、托盘图标

system_tray ->setToolTip(QString("我就是托盘"));

system_tray ->setIcon(QIcon(":/sx1.png"));

//TrayMenu *tray_menu = new TrayMenu();

QMenu *remove_menu = new QMenu();

QAction *remove_selected_action = new QAction(remove_menu);

QAction *remove_all_action = new QAction(remove_menu);

remove_menu->addAction(remove_selected_action);

remove_menu->addAction(remove_all_action);

remove_selected_action->setText(tr("remove selected watermarks"));

remove_all_action->setText(tr("remove all watermarks"));

system_tray->setContextMenu(remove_menu);

 

//点击托盘执行的事件

connect(system_tray , SIGNAL(activated(QSystemTrayIcon::ActivationReason)), this, SLOT(iconIsActived(QSystemTrayIcon::ActivationReason)));

     connect(remove_menu, SIGNAL(showWidget()), this, SLOT(showNormal()));

//显示托盘

system_tray->show();

//托盘显示提示信息

system_tray->showMessage(QString("托盘标题"), QString("托盘显示内容"));

注：关闭和最小化进入到托盘代码

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void Form::closeEvent(QCloseEvent *e)

{

    this->hide();

    e->ignore();

}

void Form::changeEvent(QEvent *e)

{

    if((e->type()==QEvent::WindowStateChange)&&this->isMinimized())

    {

        this->hide();

        e->ignore();

    }

}