Adding wxWidgets to existing app

[GyroTech]

Hello all. I have an app based on SDL and OpenGL and the gui interface I 
have been using so far has reached the limit of usefulness and now I 
need the more powerful wxWidgets.

Is it possible to simply add the wxWidgets references to my existing app 
and open a dialog or frame along side my SDL window (I'm thinking of a 
multiple-window interface somewhat like the GIMP). Or do I need to 
refactor my entire app to be based off wxApp.

I have already attempted ideas of an SDL-subclass of wxPanel but I 
cannot seem to get that to work with OpenGL. My other idea is a wxThread 
to contain the SDL window (which should still allow SDL to control 
events??) but I'm not sure how the wxWidgets frame\dialog would pass 
instructions back to this thread.

Any ideas at all will be well appreciated.

Thanks

Gyro Tech