Qt 从菜单栏打开文件

Qt从菜单栏的下拉菜单选择文件

构造函数中设置打开动作信息

    //打开文件
    m_menu = ui.menu;
//  m_menu->menuAction = new QAction(QIcon(tr("images/open.ico")), tr("打开文件"), this);
    QAction *Action = new QAction(tr("打开文件"), this);
    //设置打开文件按钮的快捷方式
    Action->setShortcut(tr("Ctrl+o"));
    m_menu->addAction(Action);
    
    //关联信号和槽
    QObject::connect(Action, SIGNAL(triggered()), this, SLOT(OpenFile()));

打开文件的实现函数

void player_qt::OpenFile(){
    //同时打开多个文件
    QStringList str_path_list = QFileDialog::getOpenFileNames(this, tr("选择视频文件"), tr("/home"), tr("视频文件(*.mp4 *.m3u8 *.flv);;"));
    QString str_path = "";
    for (int i = 0; i < str_path_list.size(); i++){
        str_path = str_path_list[i];
        qDebug() << "path=" << str_path;
        /*QFileInfo file = QFileInfo(str_path);
        QString file_name = file.fileName();
        file_list.append(str_path);
        output_name.append(file_name);
        strs.append(file_name);
        strs += "\n";*/
    }
    //Qstring转string
    std::string StrPath = str_path.toStdString();
    
}

更多参考