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

int dc_tag_init ( uint32_t  max_tag_count, DC_TAG_CALLBACK *  callback, void *  user_context  ) Initialize the DCTag SDK. Before any other API can be used correctly, you must call this function once and only once to perform a runtime initialization firstly. Parameters [in] max_tag_count the max tag count you will handle in your application. [in] callback the callback function pointer, in struct dc_tag_callback. If your application will not add any tag to the DataCenter, you can ignore this parameter and give a NULL value. [in] user_context the context pointer, which will be passed in the callback functions. Returns On success, zero is returned, otherwise an error code is returned. please refer to the enum dc_tag_error_code for the error code description. See also dc_tag_callback Examples: dc_tag_owner.c, dc_tag_read.c, dc_tag_read_subscription.c, dc_tag_update.c, and dc_tag_write.c.