UlGetOverlappedResult(
IntPtr pUnmanagedOverlapped, // pointer to overlapped structure
ref int pNumberOfBytesTransferred, // pointer to actual bytes count
bool bWait // wait flag
)
{
GlobalLog.Print("Entering UlGetOverlappedResult(" + Convert.ToString(pUnmanagedOverlapped) + ")");
if (hDevice == NativeMethods.INVALID_HANDLE_VALUE)
{
return(NativeMethods.ERROR_INVALID_PARAMETER);
}
if ((long)pUnmanagedOverlapped == 0)
{
return(NativeMethods.ERROR_INVALID_PARAMETER);
}
if (bWait)
{
AutoResetEvent m_Event = new AutoResetEvent(false);
m_Event.SetHandle(Marshal.ReadInt32(pUnmanagedOverlapped + Win32.OverlappedhEventOffset));
bOK = m_Event.WaitOne();
pNumberOfBytesTransferred = Marshal.ReadInt32(pUnmanagedOverlapped + Win32.OverlappedInternalHighOffset);
}
else
{
pNumberOfBytesTransferred = Marshal.ReadInt32(pUnmanagedOverlapped + Win32.OverlappedInternalHighOffset);
if (Marshal.ReadInt32(pUnmanagedOverlapped + Win32.OverlappedInternalOffset) == NativeMethods.ERROR_IO_PENDING)
{
return(NativeMethods.ERROR_IO_INCOMPLETE);
}
}
return(Marshal.ReadInt32(pUnmanagedOverlapped + Win32.OverlappedInternalOffset));
} // UlGetOverlappedResult
