Multiple frames

[German C. Basisty]

Hi!

My name is German, I'm new to wxWidgets, and I actually have a question
for you if you may help:

I'm making some experience with wxWindows, and I want to write some app
which should handle with 2 frames. For that pourpose, I wrote 2 classes
derived from wxFrame: MainFrame and SecondFrame and another class to
make the program run (DECLARE_APP and IMPLEMENT_APP stuff). Those are
very very simple and basic frames. When the program starts, it shows the
MainFrame just like on the examples; very nice :) 
Then I added a menu bar, a menu and everything needed (event table, etc)
The menu is working fine.
Then, I added a private member to the Mainframe like this:

private:
	SecondFrame *frame2;

and when the user clicks on some menu, it calls a function that should
show frame 2. The code seems like following:

	SecondFrame *frame2 = new SecondFrame();
	frame2 -> Show(TRUE);
	SetTopWindow(frame2);

But it does not work :) It doesn't even compile. 

How should I do to make a frame "call" (or better show) another frame
(without using MDI)?

Bests regards,

German