MXDM_GETDEVCAPS (Compact 2013)
3/26/2014
This message requests a user-mode mixer driver to return capabilities information about the specified device.
Syntax
typedef struct {
DWORD uDeviceId;
UINT uMsg;
DWORD dwUser;
DWORD lParam1;
DWORD lParam2;
} MXDM_GETDEVCAPS;
Members
- uDeviceId
Device identifier for the target device. It can be 0, 1, 2, and so on.
- uMsg
Equals MXDM_GETDEVCAPS.
- dwUser
Instance identifier associated with the caller.
- lParam1
Pointer to a MIXERCAPS structure.
- lParam2
Size of the buffer pointed to by lParam1.
Return Value
Returns MMSYSERR_NOERROR if the operation is successful. Otherwise, it returns one of the MMSYSERR or MIXERR error codes defined in Mmsystem.h. See mixerGetDevCaps return values in the Win32 Software Development Kit (SDK).
Remarks
A client sends the MXDM_GETDEVCAPS message by calling the user-mode driver's mxmdMessage entry point, passing the specified parameters.
The driver receives an empty MIXERCAPS structure and fills it in.
Requirements
Header |
mmddk.h |