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External
Since: Mar 31, 2004
Posts: 45
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(Msg. 1) Posted: Wed Feb 25, 2004 3:31 pm
Post subject: C++ in cocoa
Archived from groups: comp>sys>mac>programmer>help (more info?)
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Hello,
I read various statements in google but...
Is it now possible to use c++ in "traditional" obj-c cocoa applications?
Tschau - Robert
--
vertrau
voraus voraus |
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External
Since: Jun 23, 2003
Posts: 321
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(Msg. 2) Posted: Wed Feb 25, 2004 5:00 pm
Post subject: Re: C++ in cocoa [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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In article <1g9qedw.909w0a1tvt6rkN%robert@vermtech.de>,
robert.TakeThisOut@vermtech.de (Robert W. Kuhn) wrote:
> Hello,
>
> I read various statements in google but...
>
> Is it now possible to use c++ in "traditional" obj-c cocoa applications?
Renaming your files to have a .mm extension will enable the
Objective-C++ compiler, which allows you to mix ObjC and C++ in the same
file. There are some gotchas, mostly relating to templates and C++ not
really grasping ObjC's weak type system, but for the most part it just
works. Apple has docs on it in the Release Notes section if you want
more info. |
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External
Since: Feb 12, 2004
Posts: 66
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(Msg. 3) Posted: Wed Feb 25, 2004 5:00 pm
Post subject: Re: C++ in cocoa [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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In article <mail-E513A5.23004825022004@localhost>, Michael Ash
<mail RemoveThis @mikeash.com> wrote:
> In article <1g9qedw.909w0a1tvt6rkN%robert@vermtech.de>,
> robert RemoveThis @vermtech.de (Robert W. Kuhn) wrote:
>
> > Hello,
> >
> > I read various statements in google but...
> >
> > Is it now possible to use c++ in "traditional" obj-c cocoa applications?
>
> Renaming your files to have a .mm extension will enable the
> Objective-C++ compiler, which allows you to mix ObjC and C++ in the same
> file. There are some gotchas, mostly relating to templates and C++ not
> really grasping ObjC's weak type system, but for the most part it just
> works. Apple has docs on it in the Release Notes section if you want
> more info.
Big point to remember: Objective C objects are not C++ objects and you
need to remember which any particular object is as it will determine
the syntax of how you will call it's methods/members.
Spence
--
James P. Spencer
Rochester, MN
"Badges?? We don't need no stinkin badges!" |
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External
Since: Mar 31, 2004
Posts: 45
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(Msg. 4) Posted: Thu Feb 26, 2004 1:19 am
Post subject: Re: C++ in cocoa [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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Michael Ash <mail.RemoveThis@mikeash.com> wrote:
> > I read various statements in google but...
> >
> > Is it now possible to use c++ in "traditional" obj-c cocoa applications?
>
> Renaming your files to have a .mm extension will enable the
> Objective-C++ compiler, which allows you to mix ObjC and C++ in the same
> file.
Must be in the same file? Is it possible the include (or import) the
header file (*.h) in the obj-c file where I use the c++-class?
I added the cppfile.mm and the cppheader.h to the project and did a
#include "cppheader.h" or a
#import "cppheader.h" or a
but get errors just in the line of the declaration of the c++-object.
Thank you and bye. |
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it_means_"halo,_then_reso
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External
Since: Mar 05, 2004
Posts: 162
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(Msg. 5) Posted: Thu Feb 26, 2004 1:19 am
Post subject: Re: C++ in cocoa [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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Robert W. Kuhn wrote:
> Must be in the same file? Is it possible the include (or import) the
> header file (*.h) in the obj-c file where I use the c++-class?
>
> I added the cppfile.mm and the cppheader.h to the project and did a
> #include "cppheader.h" or a
> #import "cppheader.h" or a
> but get errors just in the line of the declaration of the c++-object.
if you're going to include a c++ header in an obj-c source file, then
that file must be compiled in obj-c++ mode. as previously mentioned,
the easiest way to do that is to change the extension from .m to .mm,
but you can also do it via compiler switches. |
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External
Since: Mar 31, 2004
Posts: 45
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(Msg. 6) Posted: Thu Feb 26, 2004 10:37 am
Post subject: Re: C++ in cocoa [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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Jøhnny Fävòrítê (it means "halo, then resonate") <this.is.RemoveThis@fake.com>
wrote:
> > Must be in the same file? Is it possible the include (or import) the
> > header file (*.h) in the obj-c file where I use the c++-class?
> >
> > I added the cppfile.mm and the cppheader.h to the project and did a
> > #include "cppheader.h" or a #import "cppheader.h" or a but get errors
> > just in the line of the declaration of the c++-object.
>
> if you're going to include a c++ header in an obj-c source file, then
> that file must be compiled in obj-c++ mode. as previously mentioned,
> the easiest way to do that is to change the extension from .m to .mm,
My failure was the I changed the c++file.cpp to c++file.mm and not the
mydocument.m to mydocument.mm
Aaargh.
Thanks to all! Now it works great! |
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External
Since: Jun 22, 2005
Posts: 268
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(Msg. 7) Posted: Thu Feb 26, 2004 2:19 pm
Post subject: Re: C++ in cocoa [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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In article <1g9r5d8.120zypq1kja7g8N%robert@vermtech.de>,
robert DeleteThis @vermtech.de (Robert W. Kuhn) wrote:
> Must be in the same file? Is it possible the include (or import) the
> header file (*.h) in the obj-c file where I use the c++-class?
Yes, that should just work, as long as any source file that contains or
#includes/#imports both ObjC and C++ code is a .mm file (assuming you
don't use one of the other means to tell the compiler to use the ObjC++
compiler on that file).
Cheers,
-- Uli
http://www.zathras.de |
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