| DirectX SDK | 
The IDirectPlayLobby3::SendLobbyMessage method sends a message between the application and the lobby client.
HRESULT SendLobbyMessage( DWORD dwFlags, DWORD dwAppID, LPVOID lpData, DWORD dwDataSize );
Returns DP_OK if successful, or one of the following error values otherwise:
| DPERR_APPNOTSTARTED | 
| DPERR_BUFFERTOOLARGE | 
| DPERR_GENERIC | 
| DPERR_INVALIDINTERFACE | 
| DPERR_INVALIDOBJECT | 
| DPERR_INVALIDPARAMS | 
| DPERR_OUTOFMEMORY | 
| DPERR_TIMEOUT | 
  Windows NT/2000: Requires Windows 2000.
  Windows 95/98: Requires Windows 95 or later. Available as a redistributable for Windows 95.
  Header: Declared in dplobby.h.
  Import Library: Use dplayx.lib.
IDirectPlayLobby3::RunApplication, IDirectPlayLobby3::ReceiveLobbyMessage, DPLMSG_SETPROPERTY, DPLMSG_SETPROPERTYRESPONSE, DPLMSG_GETPROPERTY, DPLMSG_GETPROPERTYRESPONSE,