Re: [AD] Addon public API function declarations

[Thomas Fjellstrom <tfjellstrom@xxxxxxxxxx>]

On January 4, 2009, Miquel 'Fire' Burns wrote:
> Is it possible to have a macro that take another parameter which will
> handle if it's in import or export mode?
>
> Something like this maybe:
>
> ALLEGRO_ADDON_DLL(A5_FONT, void, al_font_init, (void));
> ALLEGRO_ADDON_DLL(A5_IIO, void, al_iio_init, (void));
>
> Which in the case of font being built, the A5_FONT would cause it to
> expand to __declspec(dllexport) and the A5_IIO would expand to
> __declspec(dllimport)
>
> I'm not sure if this would be possible though. I'm not familiar with
> macros.

Pretty sure that won't work, you can't put #if checks in a macro itself.

> On Sun, Jan 4, 2009 at 10:00 AM, Elias Pschernig
>
> <elias.pschernig@xxxxxxxxxx> wrote:
> > On Sun, 2009-01-04 at 15:12 +0100, Milan Mimica wrote:
> >> Elias Pschernig wrote:
> >> > Well, look for example at a5_font.h. What is the reason to have the
> >> > author of the addon #define their own _ALLEGRO_FONT_DLL instead of
> >> > just using a macro like _ALLEGRO_ADDON_DLL which can be shared by all
> >> > addons? The entire first half of that header could then be removed,
> >> > making it a lot more readable.
> >>
> >> a5_font uses a5_iio.
> >>
> >> a5_font.h has ALLEGRO_FONT_FUNC(void, al_font_init, (void));
> >> a5_iio.h  has A5_IIO_FUNC(bool, al_iio_init, (void));
> >> font.c includes both
> >>
> >> When compiling font.c, ALLEGRO_FONT_FUNC needs to expand to
> >> __declspec(dllexport), A5_IIO_FUNC needs to expand to
> >> __declspec(dllimport). Using different macros or each addon is the
> >> easiest way to achieve this.
> >
> > I see now. Yeah, guess no good way around it then. Stupid windose :/
> >
> > --
> > Elias Pschernig <elias@xxxxxxxxxx>
> >
> >
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>
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-- 
Thomas Fjellstrom
tfjellstrom@xxxxxxxxxx