Chinese

@JoeCFD and this is debug information: 17:52:58: Starting E:\C++\test_3d\build\Desktop_Qt_6_5_3_MinGW_64_bit-Debug\debug\test_3d.exe... Qt3D.Renderer.RHI.Backend: Initializing RHI with OpenGL backend

Please write in english or use the appropriate subforum. Moved to Chinese subforum

Please write in english or us the appropriate subforum: https://forum.qt.io/category/37/chinese

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();

Ok ，thanks

@joyforward 不用看了，大概国内镜像源出问题，或者qt的某个验证网站出问题了。等周一有人排查吧。

不是可以不用qrc添加qml文件吗, 在CMakeLists.txt里编辑添加或者DiskTool添加现有文件

@Three-Body You posted in English in Chinese forum. Please use correct forum. I think if you do not define dependencies between the projects the order will be undefined and on multi-core and/or multi-cpu machines they will be built in unspecified and probably non-reproducible order.

如果你想要实现相当窗口缩放的功能，你需要在resizeEvent时获取用户按下的位置（上下左右和四个角）然后保持原始比例来同步调整宽和高。这样可以保证用户无论在哪里调整大小，原始比例都不会变。 同时，你需要按原始与现在的比例调整控件的字号。控件的大小可以按百分比自动调整。

示例工程项目为：Scene Graph - OpenGL Under QML