HANDLE hcom;
hcom = CreateFile("COM3:",GENERIC_READ | GENERIC_WRITE,0,NULL,OPEN_EXISTING,0,NULL); hcom = CreateFile("COM
hcom = CreateFile("COM3:",GENERIC_READ | GENERIC_WRITE,0,NULL,OPEN_EXISTING,0,NULL); hcom = CreateFile("COM
阅读背景：
急啊！！VC使用CreateFile不能打开串口，永远都是返回INVALID_HANDLE_VALUE
来源：互联网
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