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    <blockquote> <p>Is that right C++ is unmanaged code and C++.NET is managed code.</p> </blockquote> <p>There's no such thing as "C++.NET". There's C++/CLI, which is basically C++ with Microsoft extensions that allow you to write code targeting the .NET framework. C++/CLI code compiles to CLR bytecode, and runs on a virtual machine just like C#. I'll assume you're actually talking about C++/CLI.</p> <p>With respect to that, one can say standard C++ is unmanaged and C++/CLI is managed, but that's very much Microsoft terminology. You'll never see the term "unmanaged" used this way when talking about standard C++ unless in comparison with C++/CLI.</p> <p>Both standard C++ and C++/CLI can be compiled by the same Visual C++ compiler. The former is the default on VC++ compilers, while a compiler switch is needed to make it compile in latter mode.</p> <blockquote> <p>I need to program for a project in C++. For better building the GUI, I would prefer to use C++.NET.</p> </blockquote> <p>You can build GUI programs in C++ just as well as C++/CLI. It's just harder because there isn't a standard library in standard C++ for building GUI like the .NET framework has, but there are lots of projects out there like <a href="http://qt.nokia.com/products/">Qt</a> and <a href="http://www.wxwidgets.org/">wxWidgets</a> which provide a C++ GUI framework.</p> <blockquote> <p>I also have another plain C++ library (unmanaged C++ dll), will it be possible to use it as a normal dll library in the C++.NET project?</p> </blockquote> <p>Yes. It might take some extra work to deal with the different standard C++ data types and .NET data types, but you can certainly make it work.</p>
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    1. POWhat is the main difference between C++ vs C++.NET?
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    1. COThanks for your quick answer. If so, should I use C++/CLI in Visual Studio to build the GUI instead of using QT or wxWidgets? because using QT or wxWidgets, I introduce another dependency of my application. I suppose that if I just use C++/CLI managed, I only need to have .net framework. What is the pros and cons of using C++/CLI, QT and wxWidgets? could you please help me to clarify about them? Thanks in advance.
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    2. CO@devn: The .NET framework is also a dependency that's even bigger than either Qt or wxWidgets, so you're going to need a dependency in any case. Note that Qt and wxWidgets do not require a .NET framework to work.
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    3. COusing wxWidgest or QT can make your application portable across multiple platforms. .NET guarantees that you are fixed on VisualStudio / Windows. If you are already familiar with the .NET Framework it reduces the effort compared to working with a completely new framework. On the other hand, using pure C++ libs does not introduce an additional layer (ref classes vs. native classes) that you have to master. In short - it depends on your knowledge and use case.
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      1. USTobias Langner
 

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