Question

I have the following C code:

const BYTE* Items[3]; Items[0] = item1; Items[1] = item2; Items[2] = item3; int result = Generalize(3, Items); 

with Generalize having a signature of

int __stdcall Generalize(INT count, const BYTE * const * items); 

What is the best way to make that call with PInvoke?

Answer 1

I can’t guarantee this is the best way, but it’s the first way I’d try.

    [DllImport('<unknown>',             EntryPoint='Generalize',             CallingConvention=CallingConvention.StdCall)]     public static extern int Generalize(int count, IntPtr[] items);      public static void CallGeneralize()     {         var itemCount = 3;         var items = new IntPtr[itemCount];          items[0] = item1; // where itemX is allocated by Marshal.AllocHGlobal(*)         items[1] = item2;         items[2] = item3;          var result = Generalize(itemCount, items);     }