DC_TAG dc_tag_add dc_tag_add_subscription DC_TAG_CALLBACK dc_tag_close dc_tag_error_code dc_tag_explain_quality DC_TAG_HANDLE dc_tag_init DC_TAG_MAX_RW_COUNT dc_tag_open dc_tag_read dc_tag_read_subscription dc_tag_remove dc_tag_remove_subscription dc_tag_uninit dc_tag_update dc_tag_write

DC_TAG_HANDLE dc_tag_add ( char const *  tag_name, void *  tag_context  ) Add a tag to the DataCenter. Parameters [in] tag_name Specify the name of the tag you want to add to the DataCenter, if an exist tag in the DataCenter has the same name with the tag adding, then this function will return error and no new tag will be added to the DataCenter. [in] tag_context The context related to the tag added, it will be passed by the read or write callback function. Returns On success, a valid tag handle is returned, otherwise NULL is returned. Examples: dc_tag_owner.c, and dc_tag_update.c.