Managed C++/CLI

James1976 wrote:

a DLL project that it links to called Editor.dll.

Mark Salsbery
Microsoft MVP - Visual C++

James1976 wrote:

I couldnt link the .lib (Editor.lib) as the .lib file is only generated if the DLL contains any exports, which it doesnt currently.

James1976 wrote:

I cant export the function that has the link error (the GetThisClass() function) as its not in my code. Its in the MFC base-class and i cant override it in order to place a "declspec(export)" in front of it.

James1976 wrote:

(only a class that does not contain managed code can be exported it seems).

James1976 wrote:

Any further suggestions would be appreciated?

led mike wrote:

Then you create your own function that you can export and it calls the MFC function.

led mike wrote:

That is not true. We use a DLL that I authored that is a mixed mode DLL that exports a native C++ class. That class is used in a native Win32 application. The native classes you export cannot use any managed types as parameters because then they would not be a native interface. However they can use managed objects in the implementation

led mike wrote:

See here[^]

James1976 wrote:

Thanks for your link. I have already tried most of these

led mike wrote:

Have you seen this[^]?

// <code>remove these from Unmanaged.cpp</code>
#pragma once
#pragma unmanaged
#ifndef Unmanaged_CPP
#define Unmanaged_CPP
...
#endif


// <code>remove these from Managed.cpp</code>
#pragma once

Mark Salsbery
Microsoft MVP - Visual C++

jobin007007 wrote:

I actually made all the object variable definitions in the header file to another class I already had in the header file and declared them static.Is there any disadvantage in moving them to the class versus declaring them as global??????

jobin007007 wrote:

QUESTION 1)So as seen above I am creating an pointer object of type UNMANAGEDNAMESPACE.Data So i guess the larger the size of UNMANAGEDNAMESPACE.Data class, the larger the memory used will be when i define pObj = new UNMANAGEDNAMESPACE.Data().

jobin007007 wrote:

QUESTION 2)Is there any problems in the above approach. Is there a better approach for reducing memory of the program?

public ref class ManagedCLR
{
private:
    UNMANAGEDNAMESPACE.Data *pObj; //Here my Unmanaged Class is referenced through a pointer.

public:
    ManagedCLR()
    {
        pObj = new UNMANAGEDNAMESPACE.Data(); 
    }

    ~ManagedCLR()
    {
        // clean up managed resources here

        // call the finalizer to release unmanaged resources!
        this->!ManagedCLR();
    }

    !ManagedCLR()
    {
        // clean up unmanaged resources here
        delete pObj;
        pObj = 0;
    }

    void EntryPoint(void)
    {
        //pass through to the unmanaged object
        pObj->EntryPointUnmanged(); //Here the managed program accesses my unmanaged program.
    }
};

Mark Salsbery
Microsoft MVP - Visual C++

jobin007007 wrote:

most people are using the P/Invoke approach.

Mark Salsbery
Microsoft MVP - Visual C++

jobin007007 wrote:

I am working with performance critical video hardware and software and at the same time I need to be able to develop GUI's at a fast pace. So I need to use with C++ with C#.

Mark Salsbery
Microsoft MVP - Visual C++

jobin007007 wrote:

How would I provide access to these variables from the C# file?

public ref class ManagedCLR
{
private:
    UNMANAGED.Data *pObj; //Here my Unmanaged Class is referenced through a pointer.

public:
    ManagedCLR()
    {
        pObj = new UNMANAGED.Data(); 
    }

    ~ManagedCLR()
    {
        // clean up managed resources here

        // call the finalizer to release unmanaged resources!
        this->!ManagedCLR();
    }

    !ManagedCLR()
    {
        // clean up unmanaged resources here
        delete pObj;
        pObj = 0;
    }

    void EntryPoint(void)
    {
        //pass through to the unmanaged object
        pObj->EntryPointUnmanged(); //Here the managed program accesses my unmanaged program.
    }

    property int s
    {
        int get()
        {
            return UNMANAGED::s;
        }
        void set(int value)
        {
            UNMANAGED::s = value;
        }
    }

    property int k
    {
        int get()
        {
            return UNMANAGED::k;
        }
        void set(int value)
        {
            UNMANAGED::k = value;
        }
    }
};

Mark Salsbery
Microsoft MVP - Visual C++