IOCTL_SERIAL_PURGE
This IOCTL discards characters from the output or input buffer of a specified communications resource. It can also terminate pending read or write operations on the resource.
Parameters
dwOpenData
[in] Specifies the handle returned from a call to the COM_Open function.dwCode
[in] Specifies this code.pBufIn
[in] Pointer to a DWORD. The following table shows the flags that this DWORD contains.Flag Description PURGE_TXABORT Terminates all outstanding write operations and returns immediately, even if the write operations have not been completed. PURGE_RXABORT Terminates all outstanding read operations and returns immediately, even if the read operations have not been completed. PURGE_TXCLEAR Clears the output buffer if the driver has one. PURGE_RXCLEAR Clears the input buffer if the driver has one. dwLenIn
[in] Specifies the size of a DWORD.pBufOut
Ignored.dwLenOut
Ignored.pdwActualOut
Ignored.
Requirements
OS Versions: Windows CE 1.0 and later.
Header: Pegdser.h.
See Also
Last updated on Tuesday, May 18, 2004
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