mixerGetID (Windows CE 5.0)

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

MMRESULTmixerGetID(HMIXEROBJhmxobj,UINT* puMxId,DWORDfdwId);

hmxobj
Handle to the audio mixer object to map to a mixer device identifier.
puMxId
Pointer to 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 table shows the possible flags.

Flag	Description
MIXER_OBJECTF_HMIXER	The hmxobj parameter is a mixer device handle returned by the mixerOpen function. This flag is optional.
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.

The following flags are supported in other versions of Windows, but not in Windows CE.

Flags not supported in Windows CE
MIXER_OBJECTF_AUX
MIXER_OBJECTF_HMIDIN
MIXER_OBJECTF_HMIDIOUT
MIXER_OBJECTF_HWAVEIN
MIXER_OBJECTF_HWAVEOUT
MIXER_OBJECTF_MIDIIN
MIXER_OBJECTF_MIDIOUT
MIXER_OBJECTF_WAVEHOUT
MIXER_OBJECTF_WAVEIN

Returns MMSYSERR_NOERROR if successful or an error otherwise.

The following table shows the possible error values.

Value	Description
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.

OS Versions: Windows CE 2.12 and later. Version 2.12 requires DXPAK 1.0 or later.
Header: Mmsystem.h.
Link Library: Coredll.lib.

Additional resources