I'm sorry you aren't getting a response on this issue. The wxWidgets
implementation came from Miguel (IIRC), and no-one else seems to be
using it. It is, unfortunately, one of the least tested toolkits. It
also has some other issues with Unicode and such.
If you are conversant with wxWidgets, and are willing to try to make the
implementation better, I can help you with understanding the
vgui<->adaptor API and semantics.