OpenEuphoria

Re: Rob: Q: Constant Scope

• Posted by Vincent <darkvincentdude at yahoo.com> Apr 24, 2005
• 533 views

Juergen Luethje wrote:
> 
> Matt Lewis wrote:
> 
> > Juergen Luethje wrote:
> >>
> >> I translated the most simple sample DLL that I could think of, using
> >> the official Eu 2.5 translator (compiled with Borland and Watcom) on
> >> Windows 98:
> >>
> >> ------------[ file mydll.ew ]------------
> >> }}}
<eucode>
> >> global integer foo
> >> foo = 123
> >> </eucode>
{{{

> >> -----------------------------------------
> 
> <snip>
> 
> > You need to change the declaration for foo.  In main_.h, you should see
> >
> >    extern int _1foo;
> >
> > Change this to:
> >
> >    extern _declspec(dllexport) _1foo;
> >
> > Now you should be able to:
> > }}}
<eucode>
> >    lpFoo = define_c_var(lpLib, "__1foo")
> > </eucode>
{{{

> > Note that bcc adds an extra underscore.  I don't think bcc allows you to
> > put variables into the def file, so you seem to be stuck with the ugly
> > name.  I haven't tried with any other compilers.
> 
> That works fine, thank you!
> Well, the ugly name isn't a big issue for me, since it's only used once
> in the define_c_var() function.
> 
> Now I know the reason for my previous confusion. I had assumed that the
> translator automatically exports global variables from a DLL. Now I've read
> the docs and saw, that this obviously isn't the case.
> 
> Thanks,
>    Juergen
> 
> 

Awesome dude thanks :D

Regards,
Vincent

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