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This message is used in an MMDRV_MESSAGE_PARAMSstructure passed to the WAV_IOControlfunction to request a waveform input driver to close a specified device instance previously opened with WIDM_OPEN.
MMSYSERR_NOERROR indicates success. Otherwise, the driver returns one of the MMSYSERR or WAVERR error values declared in the Mmsystem.h header file.
The ACM (Waveapi.dll) sends the WIDM_CLOSE message by calling the audio driver's (Wavedev.dll) WAV_IOControlentry point through the DeviceIoControlfunction.
If the driver has not filled and returned all the buffers received with WIDM_ADDBUFFER messages, it does not close the instance. Instead, it returns WAVERR_STILLPLAYING.
After the driver closes the device instance, it sends a WIM_CLOSE callback message to the ACM.
|Runs on||Versions||Defined in||Include||Link to|
|Windows CE OS||1.0 and later|
Note This API is part of the complete Windows CE OS package as provided by Microsoft. The functionality of a particular platform is determined by the original equipment manufacturer (OEM) and some devices may not support this API.
Last updated on Tuesday, July 13, 2004