Qt添加菜单栏-代码添加

1. 创建一个应用程序项目。

2. 在.h文件中添如下代码

private:
    QAction *actOpen;
    QAction *actNew;
    QAction *actCopy;
    QAction *actPaste;
    QAction *actCut;
    QAction *actBold;
    QAction *actIta;
    QAction *actUdl;
    void initUI();

3. 在.cpp文件中添加如下代码：

void QWMainWindow::initUI()
{
    actUdl = new QAction(QStringLiteral("下划线"),this);
    actOpen = new QAction(QStringLiteral("打开"), this);
    actNew = new QAction(QStringLiteral("新建"), this);
    actIta = new QAction(QStringLiteral("斜体"), this);
    actCut = new QAction(QStringLiteral("剪切"), this);
    actCopy = new QAction(QStringLiteral("复制"), this);
    actBold = new QAction(QStringLiteral("粗体"), this);
    actPaste = new QAction(QStringLiteral("粘贴"), this);

    actOpen->setIcon(QIcon(":/picture/Resources/open.png"));
    actBold->setIcon(QIcon(":/picture/Resources/bold.png"));
    actIta->setIcon(QIcon(":/picture/Resources/ita.png"));
    actCut->setIcon(QIcon(":/picture/Resources/cut.png"));
    actCopy->setIcon(QIcon(":/picture/Resources/copy.png"));
    actNew->setIcon(QIcon(":/picture/Resources/new.png"));
    actPaste->setIcon(QIcon(":/picture/Resources/paste.png"));
    actUdl->setIcon(QIcon(":/picture/Resources/udl.png"));
    ui.menuopen->addAction(actOpen);
    ui.menuopen->addAction(actNew);
    ui.menuEdit->addAction(actCopy);
    ui.menuEdit->addAction(actCut);
    ui.menuEdit->addAction(actPaste);
    ui.menustyle->addAction(actBold);
    ui.menustyle->addAction(actIta);
    ui.menustyle->addAction(actUdl);

    setWindowIcon(QIcon(":/picture/Resources/title.png"));

    setCentralWidget(ui.textEdit);
}//注意：图标路径不能含有中文，否则图标不显示。

4. 效果图如下：