Sounds like either:
1) Make sure that all your files are "checked" in the project views
(this means that they will all have to be compiled)
and/or
2) Your C code is looking for the _PresenterWindowEvHandler
C-function. Sadly, you've compiled it with a C++ compiler and it may
have been mangled to a different symbol name. Try adding
#ifdef __cplusplus
extern "C" {
#endif
pascal OSStatus PresenterWindowEvHandler(EventHandlerCallRef
callRef, EventRef event, void *userData);
#ifdef __cplusplus
}
#endif
to your presenter.h file.
BTW, <presenter.h> usually indicates a system file while "presenter.h"
indicates a project file.
OR
3) Something else and I'm sure someone will correct me if and when
I'm wrong ;-)
FWIW, if your problem is #2 and you don't have that problem under
Visual Studio under the same circumstances then start losing sleep...
Cheers,
H.
On 10/28/05, Kenny Millar <email@hidden> wrote:
> Please forgive me if this is a duplicate post - I got a bounce for
> the original post so not sure if it got here or not.
>
> Newbie question re linker.
> I decided it would be better to separate my code into various .cpp/.h
> files instead of having everything in main.c.
>
> To start with I moved just one function ( PresenterWindowEvHandler )
> into presenter.h and presenter.cpp
> It is declared in presenter.h as
> pascal OSStatus PresenterWindowEvHandler(EventHandlerCallRef
> callRef, EventRef event, void *userData);
>
> and implemented in presenter.cpp, my main.c file has this line:
>
> #include <presenter.h>
>
> My app is a straightforward carbon app, in XCode 1.5
>
> The whole app builds without any warnings or errors, and presenter.h
> and presenter.cpp are both under 'sources' in the project window.
> The problem is that when I run the app it immediately exists with
> this error:
>
> [Session started at 2005-10-28 17:54:59 +0100.]
> ZeroLink: unknown symbol '_PresenterWindowEvHandler'
>
> Not sure where to go from here with this, I have a confession to
> make... in my day job I'm a Visual C++ developer for the dark
> (Windows) side. In VC++ I don't need to do anything other than I've
> done above.
>
> Is it because main.c is a '.c' file and the new file is '.cpp' or is
> there some other thing I need to do to get the code in my new files
> linked into the final app?????
>
> Thanks in advance for helping out a poor newbie.
> -Kenny
>
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