Resource file and linking C++ project using winelib

[Brenda y Sergio]

Hi all,

I am porting an application from windows to linux (Miranda IM, a
multiprotocol IM program). I have just run into one problem: the file gets
compiled and runs, but the resources (icons, dialogs, images) do not seem
to be working (i.e.: they are simply not shown). Sometimes, I am getting
this message in the console each time I try to open certain dialogs:
err:win:CreateWindowExA bad class name "??????ly t\x10"
Other, a different dialog (and not present in my plugin, just one from the
main application) gets opened.

What I am doing in fact is making some of the application's plugins and I am
getting this problem only with two plugins that were developed in C++. I
have succesfully compiled and made work the ones that were written in C.

My question: is this problem related to generating / linking to the .res
file? Is there a way of solving it? Did anyone here have the same problem
and manage to make it work? Has anyone here tried to link a C++ project
using winelib and did not experience this problem?

Thank you very much. I am really lost and your help will be highly
appreciated. Sergio.

[Sergio]

OK. I have solved the problem. I will explain it a little just in case
someone runs into the same 'problem'.

First of all, linking res files in c++ projects works fine.
My problem was that the MainDll function in the source lacked << extern "C"
> > in its declaration. Inside that function the plugin copies the HINSTNACE
> > to a global that it is heavily used in the source. This signature problem
> > caused the funciton not to be 'called' and the hinstance finished holding
> > an invalid reference (my bet is that it was holding the main
> > application's). Changing that makes the whoel thing work.

Now my question is: how's it that VC++ did not need that?


Sergio wrote:
> Hi all,
>
> I am porting an application from windows to linux (Miranda IM, a
> multiprotocol IM program). I have just run into one problem: the file gets
> compiled and runs, but the resources (icons, dialogs, images) do not seem
> to be working (i.e.: they are simply not shown). Sometimes, I am getting
> this message in the console each time I try to open certain dialogs:
> err:win:CreateWindowExA bad class name "??????ly t\x10"
> Other, a different dialog (and not present in my plugin, just one from the
> main application) gets opened.
>
> What I am doing in fact is making some of the application's plugins and I
> am getting this problem only with two plugins that were developed in C++.
> I have succesfully compiled and made work the ones that were written in C.
>
> My question: is this problem related to generating / linking to the .res
> file? Is there a way of solving it? Did anyone here have the same problem
> and manage to make it work? Has anyone here tried to link a C++ project
> using winelib and did not experience this problem?
>
> Thank you very much. I am really lost and your help will be highly
> appreciated. Sergio.

[Boaz Harrosh]

Sergio wrote:
> My problem was that the MainDll function in the source lacked << extern "C"
>
> Now my question is: how's it that VC++ did not need that?

Yes.
VC++ Has special handling for DllMain,WinMain and such. Depending on the 
different targets you have (MFC COM C and so on) there is different 
things going under the hood. Same as "main" for g++.


Free Life
Boaz

[Dimi Paun]

From: "Sergio" <sergio.t(a)videotron.ca>
> Now my question is: how's it that VC++ did not need that?

Maybe it has special handling for main()?

-- 
Dimi.