MXDM_CLOSE (Windows CE 5.0)
This message requests a user-mode mixer driver to close the specified device instance that was opened with an MXDM_OPEN message.
typedef struct { DWORD uDeviceId; UINT uMsg; DWORD dwUser; DWORD lParam1; DWORD lParam2;} MXDM_CLOSE;
Members
- uDeviceId
Device identifier for the target device. It can be 0, 1, 2, and so on. - uMsg
Equals MXDM_CLOSE. - dwUser
Instance identifier of the instance to close. - lParam1
Not used. - lParam2
Not used.
Return Values
Returns MMSYSERR_NOERROR if the operation is successful. Otherwise, it returns one of the MMSYSERR or MIXERR error codes defined in Mmsystem.h. See mixerClose return values in the Microsoft® Win32® Software Development Kit (SDK).
Remarks
A client sends the MXDM_CLOSE message by calling the user-mode driver's mxmdMessage entry point, passing the specified parameters.
Often, closing a driver instance simply involves removing a client-specific data structure.
Requirements
OS Versions: Windows CE .NET 4.0 and later.
Header: Mmddk.h.
See Also
Audio Mixer Messages | MXDM_OPEN
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