Managed C++/CLI

namespace MySpace {
   public ref class Class1 : Form
      {
      public: Class1(Form form) { Class1 constructor code here }
      public: void Print();
      };  // end of Class1

   public ref class Class2 : PrintDocument
      {
      public: Class2(Class1^ class_arg){ Class2 constructor code here }
      };  // end of Class2

   inline void Class1::Print()
   {
      Class2^ my_class2 = gcnew Class2(this);
   }
}  // end of MySpace namespace

Mark Salsbery
Microsoft MVP - Visual C++

BuckBrown wrote:

but it started as someone elses code and now I'm just confused as to why this was supposed to help

Mark Salsbery
Microsoft MVP - Visual C++

iddqd515 wrote:

There's a bug where the C++/CLI compiler won't recognize that a managed array implements System::Array. The result is you can't pass a managed array to a function that takes an argument as IEnumerable^ or something similar. What you're saying makes it sound like this bug might just be a more specific case of a general problem the C++/CLI compiler has with generics.

using namespace System;
using namespace System::Collections::Generic;

generic <typename T>
void Foo(IEnumerable<T>^ col)
{
	for each (T val in col)
	{
		Console::WriteLine(val);
	}
}

int main(array<System::String ^> ^args)
{
	array<int>^ arr = {10, 20, 30, 40, 50};
	
	Foo(safe_cast<IEnumerable<int>^>(arr));

    return 0;
}

#include <vcclr.h> // Need this for gcroot
...
// Add to ONE cpp file (creation could be done later)
gcroot<MyManagedClass ^> MyGlobalObject = gcnew MyManagedClass();
...
// add to any file that needs to access MyGlobalObject (and/or add to a header file)
extern gcroot<MyManagedClass ^> MyGlobalObject;

Mark Salsbery
Microsoft MVP - Visual C++