Mattias, please help me.

I don't expect you to do my programming for me, just shine a little light
into the black void of unmanaged type marshalling.

I'm trying to host the scripting engine. In fact I've already got this
working in Delphi, but I just can't get my C# interfaces right.

The interfaces of interest are IActiveScript, IActiveScriptSite,
IActiveScriptSiteWindow, IActiveScriptParse and IActiveScriptError.

They're all documented in MSDN. Oh how I wish there was a typelib for these
interfaces. Just for the sake of argument, here's one example that puzzles
me.

HRESULT AddNamedItem(
   LPCOLESTR pstrName,  // address of item name
   DWORD dwFlags        // item flags
);

Research revealed that LPCOLESTR means long pointer to constant wide
string. I'm not really sure how this differs from an LPWStr, but this is
what I made of it (I don't think I've got it right). ScriptItem is an
enumeration I created for the flags.

void AddNamedItem(
   [MarshalAs(UnmanagedType.LPWStr)] string pstrName,
   ScriptItem dwFlags
);

Mattias, considering that I've already got this to work in another
programming language, I can't believe how much grief I'm getting trying to
map types.

I don't suppose you have a table of equivalences?

Peter Wone