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[Lloyd Dupont]

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i have a lot of interop code and some C function with callback using ponter (let say int * for example) as argument.
i want to make a very tiny wrapper (avoiding unecessary memory block copying) so my "int *" becomes "int[]", but i can't manage....

i gives you here my tiny test project, if someone could make it work, this would be great .....


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all: Main.exe cutil.dll
	main
	
Main.exe: Main.cs
	csc Main.cs
	
cutil.dll: main.c
	gcc -shared -o cutil.dll main.c -loleaut32

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// project created on 01/10/2001 at 11:21
using System;
using System.Runtime.InteropServices;

class MainClass
{
	public static void Main(string[] args)
	{
		int[] tab = new int[] { 1, 2, 3, 4, 5 };
		showTab(tab);
		
		doSomething(new callback(incTab), tab, 3);
		showTab(tab);
	}
	
	static void showTab(int[] tab)
	{
		System.Console.WriteLine("tab.Length = " + tab.Length);
		for(int i=0; i<tab.Length; i++) {
			System.Console.WriteLine("tab["+i+"] = " + tab[i]);
		}
	}
	
	public delegate void callback(int[] tab);
	static void incTab(int[] tab)
	{
		System.Console.WriteLine("incTab(tab.Length = "+tab.Length+")");
		int i;
		for(i=0; i<tab.Length; i++)
			tab[i] += 100;
	}
	
	[DllImport("cutil")]
	public static extern void doSomething(callback fct, int[] tab, int len);
}

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// created on 01/10/2001 at 11:23
#include <stdlib.h>
// gcc -shared -o cutil.dll main.c -loleaut32

#include <windows.h>
#include <wtypes.h>
#include <unknwn.h>
#include <oleauto.h>

SAFEARRAY * I32Pointer(int * c, int len)
{
	SAFEARRAYBOUND bound;
	SAFEARRAY * ret;
	
	bound.lLbound = 0;
	bound.cElements = 10;
	ret = SafeArrayCreate(VT_I4, 1, &bound);
	return ret;

	ret->pvData = c;
	ret->rgsabound[0].cElements = len;
	return ret;
}
void doSomething(void (* fct) (SAFEARRAY *), int * c, int len) 
{
	fct(I32Pointer(c, len));
	printf("c(0) = %d\n", c[0]);
}


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