[directmusic] Re: IDirectMusicPort8::Activate failed with E_FAIL
- From: Abhijit Patait <abhijit_patait@xxxxxxxxx>
- To: directmusic@xxxxxxxxxxxxx
- Date: Mon, 12 Jul 2004 22:48:03 -0700 (PDT)
Here is the code under question:
// Selects the given port for MIDI input. portinf is the DMUS_PORTCAPS
structure for the desired MIDI input port, obtained via
IDirectMusic8::EnumPort(...) with class DMUS_PC_INPUTCLASS
HRESULT CSMAudio::SelectInputPort(DMUS_PORTCAPS portinf)
{
HRESULT hr;
DMUS_PORTPARAMS8 dmus;
IDirectMusicPort8 *pInputPort = NULL;
ZeroMemory(&dmus, sizeof(DMUS_PORTPARAMS8));
// Set the params for this port
dmus.dwSize = sizeof(DMUS_PORTPARAMS8);
dmus.dwValidParams = DMUS_PORTPARAMS_CHANNELGROUPS;
dmus.dwChannelGroups = 1;
// The midi port is created here
if (FAILED(hr = m_pDirectMusic8->CreatePort(portinf.guidPort, &dmus,
&pInputPort, NULL)))
return DXTRACE_ERR_MSGBOX(TEXT("InputPort->CreatePort"), hr);
// We have to activate it (fails here)
if (FAILED(hr = pInputPort->Activate(TRUE)))
return DXTRACE_ERR_MSGBOX(TEXT("InputPort->Activate"), hr);
return S_OK;
}
Thanks
Abhijit
Abhijit Patait <abhijit_patait@xxxxxxxxx> wrote:
I am trying to activate a MIDI input port created using
IDirectMusic8::CreatePort(...) method. However, the method Activate(TRUE) is
returning E_FAIL. The documentation states that the method can return
DSERR_NODRIVER in case of an error.
I can't seem to understand why it's returning E_FAIL. I think that E_FAIL is a
general failure code, so this may be a dead end for me.
Any input will be helpful.
Thank you
Abhijit
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