Add wx headers and ext

wxheaders/wx/dcscreen.h

@@ -0,0 +1,35 @@
+/////////////////////////////////////////////////////////////////////////////
+// Name:        wx/dcscreen.h
+// Purpose:     wxScreenDC base header
+// Author:      Julian Smart
+// Modified by:
+// Created:
+// Copyright:   (c) Julian Smart
+// Licence:     wxWindows Licence
+/////////////////////////////////////////////////////////////////////////////
+
+#ifndef _WX_DCSCREEN_H_BASE_
+#define _WX_DCSCREEN_H_BASE_
+
+#include "wx/defs.h"
+#include "wx/dc.h"
+
+class WXDLLIMPEXP_CORE wxScreenDC : public wxDC
+{
+public:
+    wxScreenDC();
+
+    static bool StartDrawingOnTop(wxWindow * WXUNUSED(window))
+        { return true; }
+    static bool StartDrawingOnTop(wxRect * WXUNUSED(rect) =  NULL)
+        { return true; }
+    static bool EndDrawingOnTop()
+        { return true; }
+
+private:
+    wxDECLARE_DYNAMIC_CLASS(wxScreenDC);
+};
+
+
+#endif
+    // _WX_DCSCREEN_H_BASE_