+class WXDLLIMPEXP_CORE wxMouseEvent;
+class WXDLLIMPEXP_CORE wxKeyEvent;
+class WXDLLIMPEXP_CORE wxWindow;
+
+// ----------------------------------------------------------------------------
+// Some Unicode <-> UTF8 macros stolen from GTK
+// ----------------------------------------------------------------------------
+
+#if wxUSE_UNICODE
+ #define wxGTK_CONV(s) wxConvUTF8.cWX2MB(s)
+ #define wxGTK_CONV_BACK(s) wxConvUTF8.cMB2WX(s)
+#else
+ #define wxGTK_CONV(s) s.c_str()
+ #define wxGTK_CONV_BACK(s) s
+#endif