Pointer to function for unmanaged code in C#

Question

I have a dll which accepts a struct that contains a pointer to a function to do a callback.

How can I get an IntPtr to a function of my application to build the struct?

    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
    public class OPERATION {
        public uint OperationID;
        public IntPtr Context;  
        public IntPtr Callback; -> How to pass this?
    }

Here is the delegate accepting the OPERATION struct

public delegate void MY_CALLBACK([In] OPERATION operation, [In] uint msgId, [In] IntPtr msgDataPtr);

score 6 · Accepted Answer · edited Sep 05 '13 at 14:29

6

use Marshal.GetFunctionPointerForDelegate

edited Sep 05 '13 at 14:29

E-rich

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answered Dec 21 '09 at 08:51

John Knoeller

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score 4 · Answer 2 · answered Dec 21 '09 at 08:53

4

Maybe the Marshal.GetFunctionPointerForDelegate method may help you.

answered Dec 21 '09 at 08:53

Konamiman

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Pointer to function for unmanaged code in C#

2 Answers2