private void MeetingService_StartMeetingCallbackEvent(bool startedSuccessful, string msg) { if (startedSuccessful) { IVisualizeShell visualizeShellService = IoC.Get <IVisualizeShell>(); visualizeShellService.HideShell(); } else { GlobalData.Instance.CurWindowHwnd = _visualizeShellService.GetShellHandle(); HasErrorMsg("-1", msg); } }