Closing a Panda3d app without shutting down the whole Process

Question

wrote a small application which is composed of a QT GUI module which in turn initiate an object that inherits from ShowBase class.

Problem is, if I close the Panda App, the ShowBase class calls finalizeExit() which in turn shuts the whole process by calling exit.

If I avoid calling the finalize method by overriding userExit(), the resources for the App are not being deleted and the task manager keeps on working.

Is there a way to close the Panda App without calling exit?

Answer 1

At least in recent development builds of Panda, you should be able to call base.destroy() to shut down ShowBase and unload (most) resources. You would still need to override finalizeExit() to not quit the application when the main window is closed.

Answer 2

Maybe my answer comes very late but it might help others. I had the same problem but with Tkinter not QT.

what you can do is after you call your application's class:

app = my_class(...)

try: app.run()
except SystemExit: base.destroy()

this controls how panda closes the app. in this case it will not call finalizeExit() at all. base.destroy() will destroy the opened windows.