Hi,

I'm trying to interop with WinInet.. given this method

HINTERNET HttpOpenRequest(
 HINTERNET hConnect,
 LPCTSTR lpszVerb,
 LPCTSTR lpszObjectName,
 LPCTSTR lpszVersion,
 LPCTSTR lpszReferer,
 LPCTSTR* lpszAcceptTypes,
 DWORD dwFlags,
 DWORD_PTR dwContext
);

and this prototype

[DllImport("WinInet.dll", CharSet=CharSet.Unicode, SetLastError=true,
CallingConvention=CallingConvention.StdCall)]
public static extern IntPtr HttpOpenRequest(
            IntPtr /*HINTERNET*/hConnect,
            string /*LPCTSTR*/ lpszVerb,
            string /*LPCTSTR*/ lpszObjectName,
            string /*LPCTSTR*/ lpszVersion,
            string /*LPCTSTR*/ lpszReferrer,
            String[] /*LPCTSTR**/lpszAcceptTypes,
            UInt32 /*DWORD*/ dwFlags,
            IntPtr /*DWORD_PTR*/ dwContext);

Can anyone suggest what I've done wrong (other than trying to do this
in the first place)? When I call it as follows

string[] strArray = {"text/*"} ;

IntPtr hFile2 = WinInet.HttpOpenRequest(hConnect, "GET",
"/Win/hi.txt", "", "",
    strArray, Flags.INTERNET_FLAG_KEEP_CONNECTION, IntPtr.Zero);

I get a null ref exception: "Additional information: Object reference
not set to an instance of an object". If I pass null for
lpszAcceptTypes I get a handle, but calling InternetReadFile fails
(InternetReadFile works when I use InternetOpenUrl, so I think it's
ok).

Any help would be greatly appreciated. I've tried many permutations
and internet searches without success.

thanks,
Orlando