public static extern int WriteFile(IntPtr hFile, IntPtr lpBuffer, int nNumberOfBytesToWrite,
ref int lpNumberOfBytesWritten, ref OVERLAPPED lpOverlapped);
public static extern int WriteFileEx(IntPtr hFile, IntPtr lpBuffer, int nNumberOfBytesToWrite,
ref OVERLAPPED lpOverlapped, ref int lpCompletionRoutine);
public static extern int UnlockFileEx(IntPtr hFile, int dwReserved, int nNumberOfBytesToUnlockLow,
int nNumberOfBytesToUnlockHigh, ref OVERLAPPED lpOverlapped);
public static extern int WaitCommEvent(IntPtr hFile, ref int lpEvtMask, ref OVERLAPPED lpOverlapped);
public static extern int TransactNamedPipe(IntPtr hNamedPipe, IntPtr lpInBuffer, int nInBufferSize,
IntPtr lpOutBuffer, int nOutBufferSize, ref int lpBytesRead,
ref OVERLAPPED lpOverlapped);
public static extern int ReadFile(IntPtr hFile, IntPtr lpBuffer, int nNumberOfBytesToRead,
ref int lpNumberOfBytesRead, ref OVERLAPPED lpOverlapped);
public static extern int GetOverlappedResult(IntPtr hFile, ref OVERLAPPED lpOverlapped,
ref int lpNumberOfBytesTransferred, int bWait);
public static extern int DeviceIoControl(IntPtr hDevice, int dwIoControlCode, IntPtr lpInBuffer,
int nInBufferSize, IntPtr lpOutBuffer, int nOutBufferSize,
ref int lpBytesReturned, ref OVERLAPPED lpOverlapped);
public static extern int ConnectNamedPipe(IntPtr hNamedPipe, ref OVERLAPPED lpOverlapped);