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4/8/2010

This function retrieves details about a single control associated with an audio line.

Syntax 

MMRESULT mixerGetControlDetails(
  HMIXEROBJ 
hmxobj, 
  LPMIXERCONTROLDETAILS 
pmxcd, 
  DWORD 
fdwDetails 
);

Parameters

hmxobj

Handle to the mixer device object being queried.

pmxcd

Pointer to a MIXERCONTROLDETAILSstructure, which is filled with state information about the control.

fdwDetails

Flags for retrieving control details.

The following table shows the possible flags.

Flag Description

MIXER_GETCONTROLDETAILSF_LISTTEXT

The paDetailsmember of the MIXERCONTROLDETAILSstructure points to one or more MIXERCONTROLDETAILS_LISTTEXTstructures to receive text labels for multiple-item controls.

An application must get all list text items for a multiple-item control at once.

This flag cannot be used with MIXERCONTROL_CONTROLTYPE_CUSTOM controls.

MIXER_GETCONTROLDETAILSF_VALUE

Current values for a control are retrieved.

The paDetailsmember of the MIXERCONTROLDETAILSstructure points to one or more details structures appropriate for the control class.

MIXER_OBJECTF_HMIXER

The hmxobjparameter is a mixer device handle returned by the mixerOpenfunction.

This flag is optional.

MIXER_OBJECTF_MIXER

The hmxobjparameter is the identifier of a mixer device in the range of zero to one less than the number of devices returned by the mixerGetNumDevsfunction.

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

MIXERR_INVALCONTROL

The control reference is invalid.

MIXERR_INVALLINE

The audio line reference is invalid.

MMSYSERR_BADDEVICEID

The hmxobjparameter specifies an invalid device identifier.

MMSYSERR_INVALFLAG

One or more flags are invalid.

MMSYSERR_INVALHANDLE

The hmxobjparameter specifies an invalid handle.

MMSYSERR_INVALPARAM

One or more parameters are invalid.

MMSYSERR_NODRIVER

No mixer device is available for the object specified by hmxobj.

Remarks

All members of the MIXERCONTROLDETAILSstructure must be initialized before calling this function.

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

See Also