[Qt-interest] Qt C++ with some C++.NET calls

[Jeroen De Wachter]

Ok,

C# and C++ .NET are not the same. But Ben does have valid points in [1],
[2] and [3]. C++ .NET is rather different to work with than C++.

C++ .NET (or managed C++) is basically C++ with extra features
concerning (I think?) garbage collection and the like, and the ability
to use the .NET class library (just like you would in C# or VB.Net)

I don't know a whole lot about this, but I'm fairly sure that you will
need a number of context changes between managed (for the .NET stuff)
and unmanaged C++ (for the Qt stuff), which is possible from within .NET
but not very efficient iirc

I'm also guessing that you will end up with a very complex and hard to
debug code base if you start mixing managed and unmanaged code...

Using qmake is probably going to be difficult, btw... qmake won't know
how to compile the managed code or what flags to pass to the
compiler/linker...

One obvious question maybe: if you are going to use .NET anyway, why not
simply use the .NET class library instead of Qt? Surely (almost?)
everything that is available in Qt is also present in the .NET class
library? Plus you could switch to C# instead of C++.NET, which should
make your code much easier to write and maintain. (C# is almost exactly
like Java; it just uses the .NET class library instead of the Java one).

Kind regards,

Jeroen De Wachter

On Fri, 2010-01-15 at 06:23 -0800, BRM wrote:
> >From: Sylvain Pointeau <sylvain.pointeau at gmail.com>
> >To: qt-interest at trolltech.com
> >Sent: Fri, January 15, 2010 5:41:24 AM
> >Subject: [Qt-interest] Qt C++ with some C++.NET calls
> >I would like to know if this is possible to embed some C++.NET code into a Qt Application?
> >What do you recommend? is it possible to continue using QMake?
> 
> Well, given that C++.NET (aka C#) is NOT C++[2], I don't know that that would a supported configuration, especially given the subtle changes in the languages[3].
> 
> That said, it should be like embedding it into any other standard C++/Pascal/Ada/etc -based source code.
> 
> HTH,
> 
> Ben
> 
> [1] C++.NET is as close to C++ as Java is. For all intents and purposes it is a separate language.
> [2] There are two modes for MS's C++ compiler: (a) C++, (b) Managed C++/C++.Net/C#. I take it you are referring to mode 'b'. Mode 'a' is fully supported.
> [3] C++.NET makes use of a lot of C++ keywords, but there are subtle changes that result in big differences.
> Here's some URLs (from a quick google search) on the matter:
> http://msdn.microsoft.com/en-us/magazine/cc301520.aspx
> http://msdn.microsoft.com/en-us/library/yyaad03b%28VS.71%29.aspx
> 
> 
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> Qt-interest mailing list
> Qt-interest at trolltech.com
> http://lists.trolltech.com/mailman/listinfo/qt-interest



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