27.5 Event Handling (cont.)

• We create an event table out of macros that automatically produce correct code.
• The generic form of the event table is:

  BEGIN_EVENT_TABLE(ClassName, BaseClassName)
     EVT_TYPE(parameters, function)
     . . .
  END_EVENT_TABLE()

• There are several different event types; here we use the MENU event type that requires a menu ID as a parameter.

  BEGIN_EVENT_TABLE(EventFrame, wxFrame)
     EVT_MENU(IS_SAY_HELLO, EVentFrame::OnSayHello)
  END_EVENT_TABLE()

• We need to insert another macro into the definition of each class that has an event table.

  class EventFrame : public wxFrame
  {
     . . . 
  private:
     wxTextCtrl* text;
     DECLARE_EVENT_TABLE()
  };

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