mixerSetControlDetails
The
mixerSetControlDetails function sets properties of a single control associated with an audio line.
MMRESULT mixerSetControlDetails(
HMIXEROBJ hmxobj,
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|
LPMIXERCONTROLDETAILS pmxcd,
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DWORD fdwDetails
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);
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Parameters
hmxobj
Handle of the mixer device object for which properties are being set.
pmxcd
Address of a
MIXERCONTROLDETAILS structure. This structure is used to reference control detail structures that
contain the desired state for the control.
fdwDetails
Flags for setting properties for a control. 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 a mixer device identifier 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.
MIXER_SETCONTROLDETAILSF_CUSTOM
A custom dialog box for the specified custom mixer control is displayed. The
mixer device gathers the required information from the user and returns the data
in the specified buffer. The handle for the owning window is specified in the
hwndOwner member of the
MIXERCONTROLDETAILS structure. (This handle can be set to NULL.) The application can then save
the data from the dialog box and use it later to reset the control to the same
state by using the MIXER_SETCONTROLDETAILSF_VALUE flag.
MIXER_SETCONTROLDETAILSF_VALUE
The current value(s) for a control are set. The
paDetails member of the
MIXERCONTROLDETAILS structure points to one or more mixer-control details structures of the
appropriate class for the control.
Return Values
Returns MMSYSERR_NOERROR if successful or an error otherwise. Possible error
values include the following:
MIXERR_INVALCONTROL
| The control reference is invalid.
|
MMSYSERR_BADDEVICEID
| The hmxobj parameter specifies an invalid device identifier.
|
MMSYSERR_INVALFLAG
| One or more flags are invalid.
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MMSYSERR_INVALHANDLE
| The hmxobj parameter specifies an invalid handle.
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MMSYSERR_INVALPARAM
| One or more parameters are invalid.
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MMSYSERR_NODRIVER
| No mixer device is available for the object specified by hmxobj.
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Remarks
All members of the
MIXERCONTROLDETAILS structure must be initialized before calling
mixerSetControlDetails.
If an application needs to retrieve only the current state of a custom mixer
control and not display a dialog box, then
mixerGetControlDetails can be used with the MIXER_GETCONTROLDETAILSF_VALUE flag.
See Also
MIXERCONTROLDETAILS,
auxGetNumDevs,
midiInOpen,
midiOutOpen,
mixerOpen,
waveInOpen,
waveOutOpen,
midiInGetNumDevs,
midiOutGetNumDevs,
mixerGetNumDevs,
waveInGetNumDevs,
waveOutGetNumDevs,
mixerGetControlDetails
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