RS232 串口模块 //Reading / Writing Methods DWORD Read(void* lpBuf, DWORD dwCount); BOOL Read(void* lpBuf, DWORD dwCount, OVERLAPPED& overlapped); void ReadEx(void* lpBuf, DWORD dwCount); DWORD Write(const void* lpBuf, DWORD dwCount); BOOL Write(const void* lpBuf, DWORD dwCount, OVERLAPPED& overlap