This is the classic MSDN serial communication routines. A lot of serial-line control, source not of this routine. After all, it is MS' s own, although a single-threaded, and the stability and speed are good. The original works relatively early, VC6 can be directly used to open click TestTTY.dsw.

Source
......\4918
......\....\TestTTY
......\....\.......\ABOUT.C
......\....\.......\ABSTRACT.TXT
......\....\.......\Debug
......\....\.......\.....\ABOUT.obj
......\....\.......\.....\ERROR.obj
......\....\.......\.....\INIT.obj
......\....\.......\.....\MTTTY.obj
......\....\.......\.....\MTTTY.res
......\....\.......\.....\READER.obj
......\....\.......\.....\READSTAT.obj
......\....\.......\.....\SETTINGS.obj
......\....\.......\.....\STATUS.obj
......\....\.......\.....\TestTTY.exe
......\....\.......\.....\TestTTY.ilk
......\....\.......\.....\TestTTY.pch
......\....\.......\.....\TestTTY.pdb
......\....\.......\.....\TRANSFER.obj
......\....\.......\.....\vc60.idb
......\....\.......\.....\vc60.pdb
......\....\.......\.....\WRITER.obj
......\....\.......\ERROR.C
......\....\.......\INIT.C
......\....\.......\MAKEFILE
......\....\.......\MTTTY.C
......\....\.......\MTTTY.H

......\....\.......\MTTTY.MAK
......\....\.......\MTTTY.RC



......\....\.......\READER.C
......\....\.......\READSTAT.C
......\....\.......\RESOURCE.H
......\....\.......\SETTINGS.C
......\....\.......\STATUS.C
......\....\.......\TestTTY.dsp
......\....\.......\TestTTY.dsw
......\....\.......\TestTTY.ncb
......\....\.......\TestTTY.opt
......\....\.......\TestTTY.plg
......\....\.......\TRANSFER.C
......\....\.......\TTYINFO.H
......\....\.......\WRITER.C

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