mixerGetID
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4/8/2010
This function retrieves the device identifier for a mixer device associated with a specified device handle.
Syntax
MMRESULT mixerGetID(
HMIXEROBJ hmxobj,
UINT* puMxId,
DWORD fdwId
);
Parameters
- 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 Embedded CE.
Flags not supported in Windows Embedded 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
Return Value
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. |
Requirements
| Header | mmsystem.h |
| Library | coredll.lib |
| Windows Embedded CE | Windows CE 2.12 and later |
| Windows Mobile | Windows Mobile Version 5.0 and later |
| Note | Version 2.12 requires DXPAK 1.0 or later |