A QApplication instance already exists

Question

I\'m doing some simple PySide on 3Dsmax 2015.

This is my error:

python.ExecuteFile \"C:\\Program Files\\Autodesk\\3ds Max 2015\\scripts\\Python\\dem         


        

Answer 1

Direct citation from the helpfile (Using PySide):

Normally one creates a PySide application object in a script using QtGui.QApplication(). However, in 3ds Max, there is already a PySide application running, so you get a handle for that object like this:

QtGui.QApplication.instance()