If i use implib on a dll created by MSVC, do I need to declare the functions extern (Windows) in my .d file ?


C

In article <bm1pcg$b79$1@digitaldaemon.com>, Charles Sanders says...
>
>If i use implib on a dll created by MSVC, do I need to declare the functions extern (Windows) in my .d file ?

Of course.
The compiler needs to know what you're talking about.
You can't have undeclared symbols.

Ant

I mean is it extern (Windows ) or extern (C )

C
"Ant" <Ant_member@pathlink.com> wrote in message
news:bm1rv2$enc$1@digitaldaemon.com...
> In article <bm1pcg$b79$1@digitaldaemon.com>, Charles Sanders says...
> >
> >If i use implib on a dll created by MSVC, do I need to declare the
functions
> >extern (Windows) in my .d file ?
>
> Of course.
> The compiler needs to know what you're talking about.
> You can't have undeclared symbols.
>
> Ant
>
>

In article <bm1t0n$g3b$1@digitaldaemon.com>, Charles Sanders says...
>
>I mean is it extern (Windows ) or extern (C )
>

That's a good question. I don't even know why
we have (windows) I just found an explanation
on the D pages. probably reading it would
answer that question.

Ant

If the C dll uses __cdecl convention, use extern (C), and if it uses
__stdcall convention, use extern (Windows).  If it uses __fastcall, you're
hosed.  ;)

Sean

"Charles Sanders" <sanders-consulting@comcast.net> wrote in message news:bm1t0n$g3b$1@digitaldaemon.com...
> I mean is it extern (Windows ) or extern (C )
>
> C
> "Ant" <Ant_member@pathlink.com> wrote in message
> news:bm1rv2$enc$1@digitaldaemon.com...
> > In article <bm1pcg$b79$1@digitaldaemon.com>, Charles Sanders says...
> > >
> > >If i use implib on a dll created by MSVC, do I need to declare the
> functions
> > >extern (Windows) in my .d file ?
> >
> > Of course.
> > The compiler needs to know what you're talking about.
> > You can't have undeclared symbols.
> >
> > Ant

"Ant" <Ant_member@pathlink.com> wrote in message news:bm1ur5$ihi$1@digitaldaemon.com...
> In article <bm1t0n$g3b$1@digitaldaemon.com>, Charles Sanders says...
> >
> >I mean is it extern (Windows ) or extern (C )
> >
>
> That's a good question. I don't even know why
> we have (windows) I just found an explanation
> on the D pages. probably reading it would
> answer that question.
>
> Ant
>

A DLL exported function can have any extern.. you just have to use the same one when calling it. By default in your C code, the calling convention is cdecl, which in D is extern(C), or you can specify stdcall in the C code (commonly implemented as __stdcall) and use extern(Windows) in D. It's just most common to use stdcall for DLLs.

Ahh thanks, sorry think ive asked this before but forgot :).

C

"Sean L. Palmer" <palmer.sean@verizon.net> wrote in message news:bm1vac$j8s$1@digitaldaemon.com...
> If the C dll uses __cdecl convention, use extern (C), and if it uses
> __stdcall convention, use extern (Windows).  If it uses __fastcall, you're
> hosed.  ;)
>
> Sean
>
> "Charles Sanders" <sanders-consulting@comcast.net> wrote in message news:bm1t0n$g3b$1@digitaldaemon.com...
> > I mean is it extern (Windows ) or extern (C )
> >
> > C
> > "Ant" <Ant_member@pathlink.com> wrote in message
> > news:bm1rv2$enc$1@digitaldaemon.com...
> > > In article <bm1pcg$b79$1@digitaldaemon.com>, Charles Sanders says...
> > > >
> > > >If i use implib on a dll created by MSVC, do I need to declare the
> > functions
> > > >extern (Windows) in my .d file ?
> > >
> > > Of course.
> > > The compiler needs to know what you're talking about.
> > > You can't have undeclared symbols.
> > >
> > > Ant
>
>