Invoking c++ classes/other modules from different module in WPF Application

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Dear All,

In my WPF App, I need to refer/invoke the c++ class from a different module.,into the current project.

Assuming, I am working in a <<MySolution.sln>> which has numerous projects, and one handling wpf GUI(MyWPFproj.cproj) here, I need to refer a C++ class albeit in different module/project., viz., (MyCPPProj.cproj) how could it be addressed in wpf.

since I am from MFC, If we need to refer a differnt dll, in our exe we use the Load Library and GetProcAddress constructs in InitInstance().,

but how is the methodology of the same in wpf, I am using MyWPFBasic.xaml.cs
with following,

using System;
using System.Collections.Generic;
using System.Windows;
using System.Windows.Input;
...

namespace Myproj.UI.Windows
{
public partial class MyProj:Windows
etc.,

I am using VS2008 IDE for Developing WPF Application using WinXP o/s,SP 1.

Thanks in Advance,

With Regards,
Samanth_90

Posted 11-Mar-12 20:29pm

Member 7985084

Updated 11-Mar-12 20:30pm

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Sergey Alexandrovich Kryukov · Answer 1 · 2012-03-11T21:06:00

Direct invocation between C++ classes and .NET is not supported, because layout of C++ classes is specific to the language and cannot be universally described as platform invoke.

Basically, you import only the static methods. You can wrap the functionality of the C++ class into a set of static methods, import them in .NET and wrap them in .NET class.

Then you have two options:

Make your C++ project an unmanaged DLL. Use P/Invoke to consume your DLL in a .NET project. Please see:

http://en.wikipedia.org/wiki/PInvoke[^];
http://msdn.microsoft.com/en-us/library/Aa712982[^].

This CodeProject article could also be useful:
http://www.codeproject.com/csharp/EssentialPInvoke.asp[^].
Develop a mixed mode C++/CLI + C++ (managed+unmanaged) DLL out of your C++ application. Wrap you C++ code in managed ("ref") C++/CLI classes and make them and required method public. Resulting DLL can be used as a regular .NET assembly: referenced in your .NET project.

Please see:
http://en.wikipedia.org/wiki/C%2B%2B/CLI[^],
http://www.ecma-international.org/publications/standards/Ecma-372.htm[^].

—SA