Possible to use pinvoke to call DLL built with cygwin

["Sammy Yu" <temijun at gmail dot com>]

Hi guys,
   I'm trying to port an application onto Windows that was originally
developed for UNIX using rpc, pthreads, and AF_UNIX sockets.  I have
used cygwin to compile this application successfully.  One of the
components built is a DLL which I want to invoke from a C Sharp
application.  However, the application crashes whenever I call this
DLL via pinvoke in C Sharp.


************** Exception Text **************
System.DllNotFoundException: Unable to load DLL 'perm.dll': Invalid
access to memory location. (Exception from HRESULT: 0x800703E6)
   at WinPcapRedirectorUI.Perm.meme ()
   at WinPcapRedirectorUI.MainForm.statisticsButton_Click(Object
sender, EventArgs e) in
C:\eclipse\workspace\winperm\WinPcapRedirectorUI\MainForm.cs:line 74
   at System.Windows.Forms.Control.OnClick (EventArgs e)
   at System.Windows.Forms.Button.OnClick(EventArgs e)
   at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
   at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons
button, Int32 clicks)


I verified that the cygwin*.dll are in the path.   I made a strip down
version of a dll, it exhibited the same behavior.  Next, I compiled
the
library with -mno-cygwin flag which surprisingly worked.  I suspect
that cygwin1.dll does not work with pinvoke.  Can anybody confirm this
is true?  I prefer not to have to port the native application to
Visual C or mingw32 as there are a lot of rpc and AF_UNIX sockets.
Are there any other alternatives?  Thanks in advance for your help!
Regards,
Sammy Yu

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