No real changes, just simplify wxBookCtrlBase unit test a little.

Add Realize() virtual function that can be overridden in ToolbookTestCase
instead of using explicit wxDynamicCasts.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@74278 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

tests/controls/bookctrlbasetest.h

@@ -48,6 +48,9 @@ protected:
     //the ctrl.
     void AddPanels();
 
+    // Override this to call Realize() on the toolbar in the wxToolbook test.
+    virtual void Realize() { }
+
     wxPanel* m_panel1;
     wxPanel* m_panel2;
     wxPanel* m_panel3;