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mixerGetControlDetails (Windows Embedded CE 6.0)

1/6/2010

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 MIXERCONTROLDETAILS structure, 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 paDetails member of the MIXERCONTROLDETAILS structure points to one or more MIXERCONTROLDETAILS_LISTTEXT structures 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 paDetails member of the MIXERCONTROLDETAILS structure points to one or more details structures appropriate for the control class.

    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

MIXERR_INVALCONTROL

The control reference is invalid.

MIXERR_INVALLINE

The audio line reference is invalid.

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 mixer device is available for the object specified by hmxobj.

Remarks

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

Requirements

Header mmsystem.h
Library coredll.lib
Windows Embedded CE Windows CE 2.12 and later
Note Version 2.12 requires DXPAK 1.0 or later

See Also

Reference

Hardware Audio Mixer Functions
MIXERCONTROLDETAILS
MIXERCONTROLDETAILS_LISTTEXT
mixerOpen
mixerGetNumDevs