IMPLEMENT_DYNAMIC_CLASS(wxFrame, wxWindow)
 #endif
 
-#if USE_NATIVE_STATUSBAR
+#if wxUSE_NATIVE_STATUSBAR
 bool wxFrame::m_useNativeStatusBar = TRUE;
 #else
 bool wxFrame::m_useNativeStatusBar = FALSE;
 void wxFrame::OnSize(wxSizeEvent& event)
 {
   // if we're using constraints - do use them
-  #if USE_CONSTRAINTS
+  #if wxUSE_CONSTRAINTS
     if ( GetAutoLayout() ) {
       Layout();
       return;
   }
 }
 
-// The default implementation for the close window event - calls
-// OnClose for backward compatibility.
-
+// The default implementation for the close window event.
 void wxFrame::OnCloseWindow(wxCloseEvent& event)
 {
-    // Compatibility
-    if ( GetEventHandler()->OnClose() || event.GetForce())
-    {
-        this->Destroy();
-    }
-}
-
-bool wxFrame::OnClose()
-{
-    return TRUE;
+    this->Destroy();
 }
 
 // Destroy the window (delayed, if a managed window)