#include "stdafx.h"
using namespace System;
using namespace System::Runtime::InteropServices;
[StructLayout(LayoutKind::Sequential)]
value class vRec
{
public:
int width;
int height;
vRec(int iwidth, int iheight)
{
width = iwidth;
height = iheight;
}
};
[StructLayout(LayoutKind::Sequential)]
ref class rRec
{
public:
int width;
int height;
rRec(int iwidth, int iheight)
{
width = iwidth;
height = iheight;
}
};
// By value
[DllImportAttribute("NativeCode.dll")]
extern "C" bool vIsSquare(vRec rec);
// by reference
[DllImportAttribute("NativeCode.dll")]
extern "C" bool rIsSquare(rRec^ rec);
void main()
{
// By Value
vRec vrec(2,3);
Console::WriteLine("value class rec a square? {0}", vIsSquare(vrec));
// By Reference
rRec ^rrec = gcnew rRec(3,3);
Console::WriteLine("ref class rec a square? {0}", rIsSquare(rrec));
}
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