hi Mingwei,

you should not include the *Impl files more than once in a program since
they include the implementation.
Instead you should include the non-Impl files which define the
underlying API (in form of abstract classes).

Daniel

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Hi,

I'm trying to use AR Toolkit Plus trackers with AR Toolkit but there are
linker errors (LNK 2005) when I include either the singlemarkerimpl.h or
multimarkerimpl.h in a cpp file other than in the main cpp file. It works
fine when I include the trackers directly in the main cpp, like those in the
example. The problem only comes when I implement data structures with the
trackers as a header file and try to use it.

I'm not familiar with the .net environment, but I would think that its some
settings problem that someone may have figured out since the program does
work when I create the trackers in the main cpp file.

Have anyone tried this and got it to work?

Thanks


Mingwei

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Hi,<br><br>I&#39;m trying to use AR Toolkit Plus trackers with AR Toolkit but there are linker errors (LNK 2005) when I include either the singlemarkerimpl.h or multimarkerimpl.h in a cpp file other than in the main cpp file. It works fine when I include the trackers directly in the main cpp, like those in the example. The problem only comes when I implement data structures with the trackers as a header file and try to use it.
<br><br>I&#39;m not familiar with the .net environment, but I would think that its some settings problem that someone may have figured out since the program does work when I create the trackers in the main cpp file.<br><br>
Have anyone tried this and got it to work?<br><br>Thanks<br><br><br>Mingwei<br>

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Mingwei Shen wrote:
> actually i get 34 linking errors like these, the program compiles fine
> and the problem is in the linking.
>
> testplus.obj : error LNK2005: "public: __thiscall
> ARToolKitPlus::CameraImpl::CameraImpl(void)"
> (??0CameraImpl@A ............@@ QAE@X .) already defined in item.obj
> testplus.obj : error LNK2005: "public: __thiscall
> ARToolKitPlus::BCH::BCH(void)" (??0BCH@A ............@@Q ..@X .) already
> defined in item.obj
As I already wrote you should not include the Impl.h files more than once.
The linker error messages you get indicate that you are still doing that...

To verify this quickly write some garbage into one of the ARTK+ files
(just temporary) and you should see compiler error messages for item.cpp
as well as for testplus.obj.

Daniel

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Hi,

actually i get 34 linking errors like these, the program compiles fine and
the problem is in the linking.

testplus.obj : error LNK2005: "public: __thiscall
ARToolKitPlus::CameraImpl::CameraImpl(void)" (??0CameraImpl@A ............@@
QAE@X .) already defined in item.obj
testplus.obj : error LNK2005: "public: __thiscall
ARToolKitPlus::BCH::BCH(void)" (??0BCH@A ............@@Q ..@X .) already
defined in item.obj

It looks like the project's own object files are interfering with the
linking. I'm only using 3 files, item.h, item.cpp and main.cpp. I only
included the Impl header in item.h.

I have a skeleton program with this error that doesn't do anything, what I
suspect is the project properties that's causing the problem, though I do
not know why its like that because it works fine if I only have one
main.cppinstead of including headers.

Has anyone included the marker implementation headers in a separate file
before? If so, can I have the project properties?

Thanks.

Regards,
Mingwei





On 2/13/07, Daniel Wagner <daniel@i ...............> wrote:
>
> hi Mingwei,
>
> you should not include the *Impl files more than once in a program since
> they include the implementation.
> Instead you should include the non-Impl files which define the
> underlying API (in form of abstract classes).
>
> Daniel
>
>

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Hi,<br><br>actually i get 34 linking errors like these, the program compiles fine and the problem is in the linking.<br><br>testplus.obj : error LNK2005: &quot;public: __thiscall ARToolKitPlus::CameraImpl::CameraImpl(void)&quot; (??0CameraImpl@A ............@@
QAE@X .) already defined in item.obj<br>testplus.obj : error LNK2005: &quot;public: __thiscall ARToolKitPlus::BCH::BCH(void)&quot; (??0BCH@A ............@@Q ..@X .) already defined in item.obj<br><br>It looks like the project&#39;s own object files are interfering with the linking. I&#39;m only using 3 files, 
item.h, item.cpp and main.cpp. I only included the Impl header in item.h.<br><br>I have a skeleton program with this error that doesn&#39;t do anything, what I suspect is
the project properties that&#39;s causing the problem, though I do not know
why its like that because it works fine if I only have one main.cpp
instead of including headers.<br>
<br>Has anyone included the marker implementation headers in a separate file before? If so, can I have the project properties?<br><br>Thanks.<br><br>Regards,<br>Mingwei<br><br><br><br><br><br><div><span class="gmail_quote">
On 2/13/07, <b class="gmail_sendername">Daniel Wagner</b> &lt;<a href="mailto:daniel@i ...............">daniel@i ...............</a>&gt; wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
hi Mingwei,<br><br>you should not include the *Impl files more than once in a program since<br>they include the implementation.<br>Instead you should include the non-Impl files which define the<br>underlying API (in form of abstract classes).
<br><br>Daniel<br><br></blockquote></div><br>

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