class WXDLLIMPEXP_FWD_CORE wxColourData;
// get the colour from user and return it
-WXDLLIMPEXP_CORE wxColour wxGetColourFromUser(wxWindow *parent = (wxWindow *)NULL,
+WXDLLIMPEXP_CORE wxColour wxGetColourFromUser(wxWindow *parent = NULL,
const wxColour& colInit = wxNullColour,
const wxString& caption = wxEmptyString,
wxColourData *data = NULL);