3.7.3.12 SoQtPopupMenu

void SoQtMenuSelectionCB( int item, void *data)

A Python implementation must look like:

def mySoQtMenuSelectionCallback(myInt, myCallbackData):
    '''Callback for ..

    myInt is an int
    myCallbackData can be any type or class
    '''

    # your Python code

    # no use to return something