A few questions about wxWidgets -?

Question

Python

Hello!
I use AUI to create an interface. In the process, a lot of questions arise, here are some for now:
1) When the application is closed, the error "any pushed event handlers must have been removed" pops up. Officially - it is recommended to insert the UnInit call into the frame destructor. In practice, it didn't work. The destructor fires, but UnInit does not produce any results. How else can you correctly "kill" wxAuiFrameManager?
2) How to force tabs from one wxAuiNotebook to be dragged to another wxAuiNotebook located in another dock (wxAuiPane?)
3) As I understand it, wxSplitterWindow serves to split a window into regions without creating docks. In what order to work with it, in order, for example, to create a dock, and divide it into two parts - in one tree, in another table?
You can provide an answer with examples in C ++, but it is better in Python or PHP. Thank you.