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mixerGetID
The mixerGetID function retrieves the device identifier for a mixer device associated with a
specified device handle.
MMRESULT mixerGetID(
HMIXEROBJ hmxobj,
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| UINT * puMxId,
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| DWORD fdwId
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| );
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Parameters
hmxobj
Handle of the audio mixer object to map to a mixer device identifier.
puMxId
Address of a variable that receives the mixer device identifier. If no mixer
device is available for the hmxobj object, the value  1 is placed in this location and the MMSYSERR_NODRIVER error value is
returned.
fdwId
Flags for mapping the mixer object hmxobj. The following values are defined:
MIXER_OBJECTF_AUX
The hmxobj parameter is an auxiliary device identifier in the range of zero to one less
than the number of devices returned by the auxGetNumDevs function.
MIXER_OBJECTF_HMIDIIN
The hmxobj parameter is the handle of a MIDI input device. This handle must have been
returned by the midiInOpen function.
MIXER_OBJECTF_HMIDIOUT
The hmxobj parameter is the handle of a MIDI output device. This handle must have been
returned by the midiOutOpen function.
MIXER_OBJECTF_HMIXER
The hmxobj parameter is a mixer device handle returned by the mixerOpen function. This flag is optional.
MIXER_OBJECTF_HWAVEIN
The hmxobj parameter is a waveform-audio input handle returned by the waveInOpen function.
MIXER_OBJECTF_HWAVEOUT
The hmxobj parameter is a waveform-audio output handle returned by the waveOutOpen function.
MIXER_OBJECTF_MIDIIN
The hmxobj parameter is the identifier of a MIDI input device. This identifier must be
in the range of zero to one less than the number of devices returned by the midiInGetNumDevs function.
MIXER_OBJECTF_MIDIOUT
The hmxobj parameter is the identifier of a MIDI output device. This identifier must be
in the range of zero to one less than the number of devices returned by the midiOutGetNumDevs function.
MIXER_OBJECTF_MIXER
The hmxobj parameter is the identifier of a mixer device in the range of zero to one
less than the number of devices returned by the mixerGetNumDevs function. This flag is optional.
MIXER_OBJECTF_WAVEIN
The hmxobj parameter is the identifier of a waveform-audio input device in the range of
zero to one less than the number of devices returned by the waveInGetNumDevs function.
MIXER_OBJECTF_WAVEOUT
The hmxobj parameter is the identifier of a waveform-audio output device in the range of
zero to one less than the number of devices returned by the waveOutGetNumDevs function.
Return Values
Returns MMSYSERR_NOERROR if successful or an error otherwise. Possible error
values include the following:
MMSYSERR_BADDEVICEID
| The hmxobj parameter specifies an invalid device identifier.
| MMSYSERR_INVALFLAG
| One or more flags are invalid.
| MMSYSERR_INVALHANDLE
| The hmxobj parameter specifies an invalid handle.
| MMSYSERR_INVALPARAM
| One or more parameters are invalid.
| MMSYSERR_NODRIVER
| No audio mixer device is available for the object specified by hmxobj. The location referenced by puMxId also contains the value 1.
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See Also
auxGetNumDevs, midiInOpen, midiOutOpen, mixerOpen, waveInOpen, waveOutOpen, midiInGetNumDevs, midiOutGetNumDevs, mixerGetNumDevs, waveInGetNumDevs, waveOutGetNumDevs
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