Reusing notebook pages?

[Cees de Groot]

Hi,

I have a UI with a tree on the left and depending on what's clicked on the  
right, any number of notebook pages with various widgets depending on the  
kind of item clicked on in the tree.

At the moment, I send #deleteAllPages to the notebook and recreate  
everything with every click on the tree. As I have some items with fairly  
complex UI's and quite a bit of data, this takes too much time.

What is a good way to make sure that view creation is done only once per  
different notebook page?

(I'm clueless about caching views with wxWindows. All I can come up with  
is to create all notebook pages and selectively hide/display, but this  
seems like a maintenance headache...).