#include <wx/wx.h>
  
class Propagate : public wxFrame
{
public:
    Propagate(const wxString& title);
    
    void OnClick(wxCommandEvent& event);
  
};
  
  
class MyPanel : public wxPanel
{
public: 
    MyPanel(wxFrame *frame, int id);
  
    void OnClick(wxCommandEvent& event);
};
  
  
class MyButton : wxButton
{
public:
    MyButton(MyPanel *panel, int id, const wxString &label);
  
    void OnClick(wxCommandEvent& event);
  
};