[Qgis-developer] I am trying to add a class to core

[Nathan Woodrow]

Maybe just build it in app at the moment until we have a better idea of how
it all works together.  We can refactor it out and up later if we need to.

- Nathan


On Mon, May 20, 2013 at 2:05 PM, Benedict Holland <
benedict.m.holland at gmail.com> wrote:

> So I am trying to create data frames with a QgsMapCanvas. I assumed this
> went under core but it might touch too much to not go under app for the
> time being or perhaps even gui. I only asked after about an hour of trying
> to figure out a linker error before sticking it under app. I think I am
> going to get a basic set of functions working and we can figure out where
> QgsDataFrame actually goes.
>
> Thanks for the help.
> ~Ben
>
>
> On Sun, May 19, 2013 at 11:48 PM, Nathan Woodrow <madmanwoo at gmail.com>wrote:
>
>> Hey Benedict,
>>
>> The core library is not meant to just be non-gui bits, hence why we have
>> core and gui.  As QgsMapCanvas is a class in gui you can't use it in core.
>>
>> What did you have in mind we might be able to work out a way to fit it in.
>>
>> Regards,
>> Nathan
>>
>>
>> On Mon, May 20, 2013 at 1:32 PM, Benedict Holland <
>> benedict.m.holland at gmail.com> wrote:
>>
>>>  Hi All,
>>>
>>> I am trying to create a brand new class for the core section of the code
>>> but I am getting linker errors. I am trying to include gui/qgsmapcanvas.h
>>> and then create a QgsMapCanvas object but I am getting an error which says
>>> that:
>>>
>>> undefined reference to `QgsMapCanvas::QgsMapCanvas(QWidget*, char
>>> const*)'
>>>
>>>
>>> I am guessing this is because I am trying to use an object found in the
>>> gui library but somehow isn't getting linked correctly to the core library.
>>> I added the core class I created to the CMakeList.txt and it seems to build
>>> so I assume I did that correctly. Adding ../gui in the INCLUDE_DIRECTORIES
>>> section didn't seem to help but at least I can now refer to the header as
>>> just "qgsmapcanvas.h" instead of "../gui/qgsmapcanvas.h"
>>>
>>>
>>> Basically, I can't figure out the magic that is required to link a class
>>> from the gui library to the core library. What do I do?
>>>
>>>
>>> Thanks,
>>>
>>> ~Ben
>>>
>>> _______________________________________________
>>> Qgis-developer mailing list
>>> Qgis-developer at lists.osgeo.org
>>> http://lists.osgeo.org/mailman/listinfo/qgis-developer
>>>
>>>
>>
>
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