use wxOVERRIDE

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@76220 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

samples/dragimag/dragimag.h

@@ -44,8 +44,8 @@ class MyApp: public wxApp
 {
 public:
     MyApp();
-    virtual bool OnInit();
-    virtual int OnExit();
+    virtual bool OnInit() wxOVERRIDE;
+    virtual int OnExit() wxOVERRIDE;
 
 //// Operations
 
@@ -180,7 +180,7 @@ public:
     // On some platforms, notably Mac OS X with Core Graphics, we can't blit from
     // a window, so we need to draw the background explicitly.
     virtual bool UpdateBackingFromWindow(wxDC& windowDC, wxMemoryDC& destDC, const wxRect& sourceRect,
-                    const wxRect& destRect) const;
+                    const wxRect& destRect) const wxOVERRIDE;
 
 protected:
     MyCanvas*   m_canvas;