(VikDataSourceCheckExistenceFunc) NULL,
(VikDataSourceAddSetupWidgetsFunc) datasource_gps_add_setup_widgets,
(VikDataSourceGetCmdStringFunc) datasource_gps_get_cmd_string,
+ (VikDataSourceProcessFunc) NULL,
(VikDataSourceProgressFunc) datasource_gps_progress,
(VikDataSourceAddProgressWidgetsFunc) datasource_gps_add_progress_widgets,
(VikDataSourceCleanupFunc) datasource_gps_cleanup,