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This function is the device I/O control routine.
BOOL HWIoctl( DWORD dwOpenData, DWORD dwCode, PBYTE pBufIn, DWORD dwLenIn, PBYTE pBufOut, DWORD dwLenOut, PDWORD pdwActualOut );
Parameters
- dwOpenData
- Specifies a value returned from a call to the COM_Openfunction.
- dwCode
- Specifies an I\O control code to be performed.
- pBufIn
- Pointer to the data input to the device.
- dwLenIn
- Specifies the number of bytes being passed in.
- pBufOut
- Pointer to the output data from the device.
- dwLenOut
- Specifies the maximum number of bytes to receive from a device.
- pdwActualOut
- Pointer to the actual number of bytes received from a device.
Return Values
TRUE indicates success. FALSE indicates failure.
Remarks
The MDD passes any unrecognized I/O Control codes through to this function. OEMs can implement custom I/O control codes for whatever purposes they need.
This function supports the implementation of the PDDs of serial port drivers.
Requirements
Runs on Versions Defined in Include Link to Windows CE OS 1.0 and later Serhw.h 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