Investigate support for wxComboCtrl

[KeyWorksRW]

Description:

wxComboCtrl is supported by both wxPython and wxRuby, and there is a C++ sample app that uses it. I'm not sure yet how much wxUiEditor can offer given that it a user-defined custom popup must be used, but it should at least be checked out to see if wxUiEditor can be helpful in creating a wxComboCtrl.