PurgeComm()是什么函数？(20分)

如上：）

The PurgeComm function can discard all characters from the output or input buffer of a specified communications resource. It can also terminate pending read or write operations on the resource. <br><br>BOOL PurgeComm(<br><br>&nbsp; &nbsp; HANDLE hFile, // handle of communications resource <br>&nbsp; &nbsp; DWORD dwFlags // action to perform<br>&nbsp; &nbsp;

&nbsp;Purgecomm(hComm,PURGE_rXCLEAR or PURGE_RXABORT or PURGE_TXCLEAR OR PURGE_RXCLEAR);<br>清空端口数据！

接受答案了.