Serial Port Monitoring Control - ActiveX Component Library for RS232 Data Monitoring, API for Software Developers
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PURGE Enumeration

SymbolValueDescription
HHD_SERIAL_PURGE_TXABORT0x00000001Terminates all outstanding overlapped write operations and returns immediately, even if the write operations have not been completed.
HHD_SERIAL_PURGE_RXABORT0x00000002Terminates all outstanding overlapped read operations and returns immediately, even if the read operations have not been completed.
HHD_SERIAL_PURGE_TXCLEAR0x00000004Clears the output buffer (if the device driver has one).
HHD_SERIAL_PURGE_RXCLEAR0x00000008Clears the input buffer (if the device driver has one).