added tests for background colour, static bitmap &c (part of patch 1598005)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@43476 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

samples/animate/anitest.h

@@ -31,6 +31,10 @@ public:
     void OnQuit(wxCommandEvent& event);
 
     void OnPlay(wxCommandEvent& event);
+    void OnSetNullAnimation(wxCommandEvent& event);
+    void OnSetInactiveBitmap(wxCommandEvent& event);
+    void OnSetNoAutoResize(wxCommandEvent& event);
+    void OnSetBgColor(wxCommandEvent& event);
     void OnStop(wxCommandEvent& event);
 
     void OnUpdateUI(wxUpdateUIEvent& event);