mixerSetControlDetails (Windows CE 5.0)
This function sets properties of a single control associated with an audio line.
MMRESULT mixerSetControlDetails(HMIXEROBJhmxobj,LPMIXERCONTROLDETAILSpmxcd,DWORDfdwDetails);
Parameters
hmxobj
Handle to the mixer device object for which properties are being set.pmxcd
Pointer to 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 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 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_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 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 values 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.
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
Return Values
Returns MMSYSERR_NOERROR if successful or an error otherwise.
The following table shows the possible values.
| Value | Description |
|---|---|
| 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. |
| 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 mixerSetControlDetails.
If an application needs to retrieve only the current state of a custom mixer control and not display a dialog box, mixerGetControlDetails can be used with the MIXER_GETCONTROLDETAILSF_VALUE flag.
Requirements
OS Versions: Windows CE 2.12 and later. Version 2.12 requires DXPAK 1.0 or later.
Header: Mmsystem.h.
Link Library: Coredll.lib.
See Also
mixerGetControlDetails | mixerOpen | MIXERCONTROLDETAILS | Hardware Audio Mixer Functions
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