Managed C++/CLI

Luc Pattyn9-Dec-07 7:13

9-Dec-07 7:13

Hi,

there is an "as" operator that returns either a new reference of the indicated type,
or a null value. Example:

public: Int32 __gc* Compare(Object __gc* object1, Object __gc* object2)
{
    ProcessModule __gc* module1 = (object1 as ProcessModule);
    ProcessModule __gc* module2 = (object2 as ProcessModule);
    return String::Compare(module1->FileName, module2->FileName, true);
}

BTW: the above is Reflector output of an assembly based on C# code.

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

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George L. Jackson9-Dec-07 11:25

George L. Jackson

9-Dec-07 11:25

C++/CLI does not have an "as" operator like C#. You have to use dynamic_cast or static_cast.

"We make a living by what we get, we make a life by what we give." --Winston Churchill

Luc Pattyn9-Dec-07 12:13

9-Dec-07 12:13

Hi George,

indeed, I have no reference to the "as" keyword in C++, except for the fact
that Reflector uses it. Confused | :confused:

MSDN itself shows how to use casts to simulate C#'s as, as you indicated.

Smile | :)

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Subclassing a window and not getting all the messages

George L. Jackson9-Dec-07 11:33

George L. Jackson

9-Dec-07 11:33

You can use dynamic_cast:

if (dynamic_cast<TextBox^>(control) != nullptr) // works like the C# is operator
{
  // "control" is a TextBox control.
}

"We make a living by what we get, we make a life by what we give." --Winston Churchill

Dave Calkins7-Dec-07 17:32

Dave Calkins

7-Dec-07 17:32

We're interested in subclassing a window in order to handle window messages (specifically mouse click and movement).

Our current approach is to derive a listener class from NativeWindow, assign it the handle to the window in question, and then set up a message handler to handle the incoming messages.

The behavior we’re seeing is that only a very few windows messages come down to our listener class. (Mainly WM_NCHITTTEST).

Any ideas?

Manage Visual C++.NET to C#.NET

jimmy2shoes7-Dec-07 13:39

7-Dec-07 13:39

Hi fellas

I have a program that is currently wrote in Managed C++ within the MS Visual Studio 2005 environment i was wondering if there is anyway i can migrate it to C#.NET without having to re-code it?

Any help would be majorly appricated fellas

thanks

Dave Doknjas7-Dec-07 14:23

Dave Doknjas

7-Dec-07 14:23

Our C++ to C# Converter utility will get you part of the way there (there will be some adjustments you'll have to make, but the conversion quality is pretty good for Managed C++ or C++/CLI).

David Anton
http://www.tangiblesoftwaresolutions.com
C++ to C# Converter
C++ to VB Converter
C++ to Java Converter
C++ to C++/CLI Converter
Instant C#: VB to C# converter
Instant VB: C# to VB converter
Instant C++: converts C# to C++/CLI and VB to C++/CLI

jimmy2shoes8-Dec-07 0:41

8-Dec-07 0:41

i have been looking at that one mate, i have a good part of it converted by doing it myself and using that software above, only problem is i do not knonw the difference between .CPP files and .h files. there is some of them in my project with the same name for example game.h and game.cpp how would i encorporate them into one c# class??

thanks and sorry for being niave, not a big user of c++

thanks again

Dave Doknjas8-Dec-07 2:53

Dave Doknjas

8-Dec-07 2:53

'C++ to C# Converter' takes care of that. During the conversion, it automatically merges the header file with the same name into the conversion input (in C++, '#include' just inputs the file at the location of the #include before compilation).

jimmy2shoes9-Dec-07 5:26

9-Dec-07 5:26

what happens if there is two header files, i can only select one at a time

thanks

Dave Doknjas9-Dec-07 17:11

Dave Doknjas

9-Dec-07 17:11

C++ to C# Converter will process all header files.
You can also choose to embed all header files in the converted output, but I doubt that you'd want to do this.

David Anton
http://www.tangiblesoftwaresolutions.com
C++ to C# Converter
C++ to VB Converter
C++ to Java Converter
C++ to Ruby Converter
Instant C#: VB to C# converter
Instant VB: C# to VB converter
Instant C++: converts C# to C++/CLI and VB to C++/CLI

Luc Pattyn8-Dec-07 1:32

8-Dec-07 1:32

Hi,

if your code is managed .NET code and builds to a working EXE or DLL file,
you should be able to use Reflector and convert it to source code in any of
the .NET languages; if successfull this would result in compilable code but will
lack any kind of comments your original may hold.

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

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jimmy2shoes10-Dec-07 0:02

10-Dec-07 0:02

fellas i have been trying to covert it and cannot, i dont know what i am doinf wrong, i have tried refecltor and C++ to C#

if i would upload my orginal C++ program and the new C# with all the interfaces built without any code would somebody be kind enough to convert it as you guys know what you's are talking about and would have it done alot quicker

id be ever so appriceative

thanks fellas

PS could you let me know either way?

thanks

Luc Pattyn10-Dec-07 8:51

unmanaged C++ code in .NET [modified]

10-Dec-07 8:51

Sorry I do not intend on doing your work, and I don't expect any one else will either;
this forum is for helping people with a specific question or problem.

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

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carabutnicolae12347-Dec-07 4:21

carabutnicolae1234

7-Dec-07 4:21

hello,

I would have a question about the C++ defined types to be available in .NET applications.

We have some implementation in C++, and we have been defining some classes that use templates and do some smart things. Now we have a need to be able to use those classes in C# for example, probably using an intermediate C++ CLI class-library.
The problem is how to make available those classes without to write for each class in native C++ an analog class in the C++ CLI module ? The CLI module will only include the native C++ code.

ex of what I'm looking to achieve:

C++, file "myclass.h"
class MyClass{};
class MyPipe
{
......void SendObject( MyClass& myClass );
}

C++ CLI
#include "myclass.h"
namespace BridgeClassLibrary {
....class PipeWrpper {
..........void SendObject( MyClass& myClass ){
...............MyPipe pyPipe( "super-pipe" );
...............pipe.SendObject( myClass );
..........}
....}
}

C#
using BridgeClassLibrary ;
namespace Logics.Test {
.....class PipeTester {
........static void Main( string[] args ) {
............MyClass myClass;
............PipeWrpper pipeWrpper;
............pipeWrpper.SendObject( myClass );
........}
.....}
}

modified on Friday, December 07, 2007 11:31:20 AM

George L. Jackson7-Dec-07 4:47

George L. Jackson

7-Dec-07 4:47

In order for native C++ classes to be visible to a C# application, they have to be wrapped by C++/CLI. In C++/CLI assemblies, native C++ classes have private access. Thus, C# applications can not see them. Also, CLR is not aware of C++ Templates. However, they can be wrapped and used without any problems. Furthermore, with the help of Generics and Interfaces, you can facilitate the wrapping of your Template classes.

"We make a living by what we get, we make a life by what we give." --Winston Churchill

carabutnicolae12347-Dec-07 5:23

carabutnicolae1234

7-Dec-07 5:23

ok, antoher idea

mm...

ho to import C++ classes into C# from a DLL written in C++.
If it helps the header and the .lib file will be available.

thanks

led mike7-Dec-07 5:35

led mike

7-Dec-07 5:35

carabutnicolae1234 wrote:
ho to import C++ classes into C# from a DLL written in C++.
If it helps the header and the .lib file will be available.

No, as George already told you, you can't do that. To use a native C++ library in managed code create a C++/CLI class library where you wrap the native C++ classes in managed classes. Then C# code can access them by using the managed classes.