tencent cloud

// If `conv_is_pinned` is `true`, the conversation is pinned to the top; otherwise, it is not.
bool conv_is_pinned = true;
TIMResult res = TencentIMSDK.ConvPinConversation(conv_id, conv_is_pinned, (int code, string desc, string user_data)=>{
 // Process the async logic
});

TencentIMSDK.SetConvEventCallback((TIMConvEvent conv_event, List<ConvInfo> conv_list, string user_data)=>{
  foreach(ConvInfo conv_info in conv_list) {
    if (conv_info.conv_is_pinned) {
      // Process the callback logic
    }
  }
});