static void cmd_window_ddown ( void ) {
 MAIN_WINDOW_REC * rec ;
 rec = mainwindows_find_lower ( active_mainwin ) ;
 if ( rec == NULL ) rec = mainwindows_find_lower ( NULL ) ;
 if ( rec != NULL ) window_set_active ( rec -> active ) ;
 }
static void cmd_window_ddown ( void ) {
 MAIN_WINDOW_REC * rec ;
 rec = mainwindows_find_lower ( active_mainwin ) ;
 if ( rec == NULL ) rec = mainwindows_find_lower ( NULL ) ;
 if ( rec != NULL ) window_set_active ( rec -> active ) ;
 }