unmanaged old static library, how to call its functions from managed code in Win Forms, VC++ ?

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andrea catto' - 04 May 2004 19:47 GMT

Yes I did some research on google but nowhere I could find a working
example.

I have a header file and its .lib/static library.

I'd like to design an UI application using Windows Forms which seems cool
but..........

I can NOT call a regular unmanaged static library's method.

it tells me in fact those methods don't have the _gc (garbage collection
method).

IJW ??? is that the answer ???

do I have to specify another #pragma somewhere ???

I can not modify the header file or the library.

and if possible I don't want to create wrapper functions for all those
apis..

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Anthony Moore - 10 May 2004 20:02 GMT

There is no way to call these from managed code without some minimal sort
of re-definition or wrapper. The simplest ways to call your old code:
1. Recompile the library with managed C++ and use _gc classes.
2. Create managed C++ wrapper classes for the library functions.
3. Use P/Invoke to call C-style functions directly. For this, you must get
the library compiled into a DLL.

I would recommend the 2nd option here.

--------------------

| From: "andrea catto'" <acatto@dataflight.com>
| Subject: unmanaged old static library, how to call its functions from

managed code in Win Forms, VC++ ?

| Date: Tue, 4 May 2004 11:47:05 -0700
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| X-Tomcat-NG: microsoft.public.dotnet.framework.clr
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| and if possible I don't want to create wrapper functions for all those
| apis..

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unmanaged old static library, how to call its functions from managed code in Win Forms, VC++ ?

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