dev-cpp-users

[Dev-C++] Linking a Dev-C++ DLL using VC++.net

[Dirk T. <d.t...@gm...>]

Help!

I'm new to this list and quite new to programming on Windows, so please=20
forgive me any ignorance.

I like Dev-C++ a lot and find it more usable in many respects than the=20
commercial M$ offerings.

My problem is as follow: I have a source-code (in plain C for gcc) of a=20
library I need to use in a Visual-Studio project (for the W32 gui).

I was able to successfully port (compile and link) the library into a=20
dll using Dev-C++ (current - good job, folks) and the dll projects type=20
(using declspec etc. for exports).

Then I created a small VC++.net project and included the import library=20
and headers. everything links fine but the test app crashes on the=20
first library call with a read access violation.

After much fiddling and reading I started loading the DLL and calling=20
some functions dynamically using GetProcAddress().
This works as expected and leads me to thinking that there is some=20
incompatibility in the import library.

Can it be the calling convention? I did not declare any and the=20
def-file created by Dev-C++ does not contain underscores nor=20
@<paramtersize> decorations.

It would also be an option to link statically against the GCC-built=20
library using VC++.
I tried that but also got nothing but crashes. Is that possible at all?

Note that I only use pure C, no C++ anywhere.

Any help is very much ap=FCpreciated!

Greetings,
Dirk

Re: [Dev-C++] Linking a Dev-C++ DLL using VC++.net

[<or...@vp...>]

Hi!

Have you tried using the library with a Dev-C++ project?
GCC compiled binaries can use MSVC DLLs very well. This is the purpose 
of MinGW anyway, to use msvcrt.dll (and others) from GCC binaries.
Your case however now is just the opposite (VC binaries using GCC DLLs), 
and I don't if it works, however (because of simple C code) it should.

Try it from a Dev-C++ project, that is similar to the VC++ project, and 
see if that works or not.

--
Greetings,
   Balázs