I compiled the main vaa3d program with qt5 on my mac and when doing some operations I found that the files could not be opened by dragging and dropping. According to the error message, open file[file:///......... .swc] specified does not exist, I found some path errors in the mainwindow.cpp file, which may require different modifications for different operating systems, after which I was able to drag and drop the file to open it.

The current version of qt4 does not seem to open via file, which should be a similar situation.