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

[Sylvain Pointeau]

Hi everyone,

I want to use the C++/CLI functions inside my Qt Project.
I have good reasons for that, believe me :-)

I tried to activate the CLR support in my Qt Project but it now fails to
compile ...
as I expected thought !

... I still continue to search some knowhow on it ...

Best regards,
Sylvain


On Fri, Jan 15, 2010 at 3:45 PM, Jeroen De Wachter <
jeroen.dewachter at barco.com> wrote:

> 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 at trolltech.com
> > http://lists.trolltech.com/mailman/listinfo/qt-interest
>
>
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