Shoutbox

I tried creating a C# wrapper for the function however this is the first time I'm attempting to use unsafe code in C# and my C# skills are lacking anyway, so I'm running into some walls.

I can't read the result from the function, maybe anyone here knows what I'm doing wrong?

C# code:

---

using System;
using System.Runtime.InteropServices;

namespace EstimateFileRiskLevelWrapper
{
    public class EstimateFileRiskLevelWrapper
    {
        [DllImport("winshfhc.dll", EntryPoint = "#101")]
        public static extern int EstimateFileRiskLevel([MarshalAs(UnmanagedType.LPWStr)] String pszFilePath, [MarshalAs(UnmanagedType.LPWStr)] String pszExt, [MarshalAs(UnmanagedType.LPWStr)] String pszHandler, ref IntPtr riskLevel);
        /*HRESULT EstimateFileRiskLevel(
            LPCWSTR pszFilePath,
            LPCWSTR pszExt,
            LPCWSTR pszHandler,
            FILE_RISK_LEVEL *pfrlEstimate
        );*/
    }
}

---

Trying to use the function with:

C# code:

---

EstimateFileRiskLevelWrapper.EstimateFileRiskLevelWrapper.EstimateFileRiskLevel(
                    fpath,
                    ".php",
                    hpath,
                    ref risklevel);
                IntPtr ptr = Marshal.ReadIntPtr(risklevel);

---

but I'm getting an AccessViolationException at the last line (reading the pointer).