The following MSceneMessage methods differ from their C++ counterparts.
|msg, func, clientData=None, status=None)|
bool. You may also return nothing at all which actually returns the value
Nonewhich is interpreted as
False. So similar to the C++ version you can either register a callback that does not return any value or that returns a boolean. However, in both cases the wrapper uses the same C++ version of addCallback().