Pocket PC 2005 C++ Managed Class Library

[Hassan Wassel]

Hi All,
I want to create a smart device C++ managed class library (for Pocket
PC 2005). Is this possible? If yes, how?
I want to wrap a C++ unmanaged Dll to be used in a C# application.

Thanks in advance!
Hassan

 

[Guest]

Managed C++ is not supported in any version of the Compact Framework, so no,
it is not possible.

 

[Ilya Tumanov [MS]]

1. There's no such thing as "Pocket PC 2005".

2. NETCF has no support for Managed C++.

3. You can use native DLL in C# via P/Invoke or COM interop.


--
Best regards,


Ilya

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[Hassan Wassel]

Thanks for replying. I wanted to use the C++ classes in the Dll in a C#
using P/Invoke but I didn't know how to use DllImport for class methods
not C functions.
I will appreciate your answer very much.

Thanks in advance!
Hassan

 

[Guest]

You can't. This has been discussed in the past, so for details search the
archives, but the general mechanism to use C++ classes is to write a C
interface that you P/Invoke. the C interface creates an object and returns
a handle, then for every method in the class you need a C method that you
pass the handle and parameters to.

 

[Paul G. Tobey [eMVP]]

No, you don't want to do that. You're much better off writing a C,
non-class-based, wrapper for your C++ classes and P/Invoking that. I
suppose that you could build your P/Invoke structure so that all of the
class methods expected a 'this' IntPtr as the first parameter, but you still
have to deal with calling 'new', etc. Not worth the effort. You'll never
be able to treat the C++ class as a C# class, so you're better off not
trying.

If the code is COM, then you have a chance, at least, of wrapping it with
C#.

Paul T.