mixerGetID

The mixerGetID function retrieves the device identifier for a mixer device associated with a specified device handle.

MMRESULT mixerGetID(
  HMIXEROBJ hmxobj,  
  UINT * puMxId,     
  DWORD fdwId        
);
 

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:

QuickInfo

  Windows NT: Requires version 3.1 or later.
  Windows: Requires Windows 95 or later.
  Windows CE: Unsupported.
  Header: Declared in mmsystem.h.
  Import Library: Use winmm.lib.

See Also

Audio Mixers Overview, Audio Mixer Functions, auxGetNumDevs, midiInOpen, midiOutOpen, mixerOpen, waveInOpen, waveOutOpen, midiInGetNumDevs, midiOutGetNumDevs, mixerGetNumDevs, waveInGetNumDevs, waveOutGetNumDevs