// gets the 'common' type and creator for a certain extension
static bool MacFindDefaultTypeAndCreator( const wxString& ext , wxUint32 *type , wxUint32 *creator ) ;
// registers application defined extensions and their default type and creator
// gets the 'common' type and creator for a certain extension
static bool MacFindDefaultTypeAndCreator( const wxString& ext , wxUint32 *type , wxUint32 *creator ) ;
// registers application defined extensions and their default type and creator