wxFileCtrl -- which can be #define'd as wxGenericFileCtrl -- is documented to inherit from wxControl and does derive from it in the native GTK version, so do it for the generic version too. git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@71362 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775