| DirectX SDK | 
The DirectPlay4.GetCaps method obtains the capabilities of the current DirectPlay connection and session.
object.GetCaps(caps As DPCAPS, _
    flags As CONST_DPGETCAPSFLAGS) 
If the method fails, an error is raised and Err.Number may be set to one of the following values:
| DPERR_INVALIDOBJECT | 
| DPERR_INVALIDPARAMS | 
| DPERR_UNINITIALIZED | 
The connection must be initialized before this method is called. If there is no open session, some members of DPCAPS will not return meaningful values.