QMenu 设置菜单图标 & 生成菜单树

效果图

源码

.h 文件

protected slots:
    void onMenuTriggered(QAction*);

.cpp 文件

// 菜单
    QMenu *pMenu = new QMenu(this);
    pMenu->addAction(QString::fromLocal8Bit("我"));
    pMenu->addSeparator();
    pMenu->addAction(QString::fromLocal8Bit("爱"));

    QMenu *pChildMenu = new QMenu(this);
    pChildMenu->setTitle(QStringLiteral("学"));
    pChildMenu->addAction(QStringLiteral("Q"));
    pMenu->addMenu(pChildMenu);

    QAction *act1 = new QAction(pChildMenu);
    act1->setText(QStringLiteral("t"));
    act1->setIcon(QIcon("src/Me.png"));
    pChildMenu->addAction(act1);

    QPushButton *pButton = new QPushButton(this);

    // 按钮
    pButton->setText(QString::fromLocal8Bit("主菜单"));

    // 设置菜单
    pButton->setMenu(pMenu);
    connect(pMenu, SIGNAL(triggered(QAction*)), this, SLOT(onMenuTriggered(QAction*)));

void MyClass::onMenuTriggered(QAction *action)
{
    QString str = action->text();
}