Polymorphism of wxWindows

[63q2o4i02 at sneakemail.com]

Hi, I was trying to access a member function of a wxPanel by using a
wxWindow* pointer that had been assigned to a wxPanel.  I don't
remember the name of the function, but the compiler complained that the
function was not a member of wxWindow.  I thought this was a perfect
example of where polymorphism should work, but it didn't.  I had to
make a pointer to wxPanel instead, and then it worked.

Same thing for MyApp derived from wxApp... I tried accessing a member
variable of MyApp with a wxApp* pointer that had been assigned to
MyApp, and the compiler didn't like it.

Is this normal behavior or am I doing something wrong?

wxMSW 2.7.0-1, MSVC++ Express, WinXP-SP2

(Sorry, I don't have example code.  I'm at home now and this is a work
project).

ms.