WIDM_GETDEVCAPS (Windows CE 5.0)
This message is used in an MMDRV_MESSAGE_PARAMS structure passed to the WAV_IOControl function to request a waveform input driver to return the capabilities of a specified device.
Parameters
- uDeviceId
Device identifier — 0, 1, 2, and so on — for the target device. - uMsg
Specifies this message. - dwUser
Specifies a device instance identifier. - dwParam1
Specifies a pointer to a WAVEINCAPS structure. - dwParam2
Size, in bytes, of WAVEINCAPS.
Return Values
MMSYSERR_NOERROR indicates success. Otherwise, the driver returns one of the MMSYSERR or WAVERR error values declared in the Mmsystem.h header file.
Remarks
The ACM sends this message by calling the audio driver's WAV_IOControl entry point through the DeviceIoControl function.
Requirements
OS Versions: Windows CE 1.0 and later.
Header: Mmddk.h.
See Also
Waveform Input Driver Messages | WAV_IOControl | MMDRV_MESSAGE_PARAMS | WAVEINCAPS
Send Feedback on this topic to the authors