I have added a class to my program and tested it. I was really surprised that there was any real errors. Here is the code:
#pragma once
#include "Iingredient.h"
#include <string>
#include <vector>
using namespace std;
ref class Recipe{
private:
string partsName;
vector<Iingredient> ing;
public:
Recipe(){}
};
And here are the errors:
Error 23 error C4368: cannot define 'partsName' as a member of managed 'Recipe': mixed types are not supported c:\users\user\documents\visual studio 2010\projects\smestras2_l1\Recipe.h 10 1 file2_L1
Error 24 error C4368: cannot define 'ing' as a member of managed 'Recipe': mixed types are not supported c:\users\user\documents\visual studio 2010\projects\smestras2_l1\Recipe.h 11 1 file2_L1
I googled a bit and found out that its about managed and unmanaged code. How to fix this? Is it related with manged and unmanaged code or not? if so how?
I agree with others: you shouldn't use C++/CLI in most circumstances, you should use C# (or another "normal" managed language) for that (assuming you want to write a .Net application). C++/CLI is useful mostly in special circumstances, like interoperating between managed and unmanaged code.
If you're sure you want use C++/CLI, you can't put native classes into managed ones. But you can put pointers to native classes there:
ref class Recipe{
private:
string* partsName;
vector<Iingredient>* ing;
};
The code above works. But you have to keep in mind that those are normal native C++ pointers and that means you have to manually delete
them. To do that property, you should read about how destructors and finalizers work in C++/CLI.