+#ifdef wxHAS_DRAW_TITLE_BAR_BITMAP
+
+void wxRendererGeneric::DrawTitleBarBitmap(wxWindow * WXUNUSED(win),
+                                           wxDC& WXUNUSED(dc),
+                                           const wxRect& WXUNUSED(rect),
+                                           wxTitleBarButton WXUNUSED(button),
+                                           int WXUNUSED(flags))
+{
+    // no need to fail here, if wxHAS_DRAW_TITLE_BAR_BITMAP is defined this
+    // will be implemented in the native renderer and this version is never
+    // going to be used -- but we still need to define it to allow
+    // instantiation of this class (which would have been pure virtual
+    // otherwise)
+}