问题
Unknown module(s) in Qt: 3-d. As I know, Qt(5.6) already have 3-D library, why still appear this reminder when I use it in Qt? Thanks very much.
回答1:
Because 3-d isn't a Qt module, the correct modules are listed on the Qt3D page though: Qt3D Docs.
They are: QT += 3dcore 3drender 3dinput 3dlogic
来源：https://stackoverflow.com/questions/36125777/unknown-modules-in-qt