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();    }