刚刚接触QT，菜单直接打开链接都某个文件

[xiayizhan]

QAction *savePlaylistAct = new QAction("保存播放列表(&S)", this);
connect(savePlaylistAct, &QAction::triggered, this, &Player::savePlaylist);

QAction *loadPlaylistAct = new QAction("加载播放列表(&L)", this);
connect(loadPlaylistAct, &QAction::triggered, this, &Player::loadPlaylist);

QAction *openLocalFileAction = new QAction("打开视频1", this);

这里怎么写，菜单点击打开视频1，就能打开我程序下1.mp4

fileMenu->addAction(openLocalFileAction);

[xiayizhan]

刚刚接触QT，菜单直接打开链接到某个文件"

[Grit Clef]

您试试在相应的action里头打开文件？
比如

QAction *openLocalFileAction = new QAction("打开视频1", this);
connect(openLocalFileAction, &QAction::triggered, this, &Player::openLocalFile);

然后在槽中写入类似于

#include <QtMultimedia>
#include <QtMultimediaWidgets>
...
QMediaPlayer *player = new QMediaPlayer;
 
player->setMedia(QMediaContent(QUrl("1.mp4")));
QVideoWidget *videoWidget = new QVideoWidget;
player->setVideoOutput(videoWidget);
 
videoWidget->show();
player->play();