user_data User-defined data. The IM SDK only transfers the user data to the callback function cb without processing the data.
returns
int returns TIM_SUCC to indicate that the interface call is successful (only when the interface returns TIM_SUCC, the callback cb will be called), other values indicate that the interface call failed. For the definition of each return value, please refer to TIMResult
params: json_identifier_array (user ID list)
user_data User-defined data. The IM SDK only transfers the user data to the callback function cb without processing the data.
int returns TIM_SUCC to indicate that the interface call is successful (only when the interface returns TIM_SUCC, the callback cb will be called), other values indicate that the interface call failed. For the definition of each return value, please refer to TIMResult