Re: [QGIS-Developer] Upgrading to V3
Nyall , Thank you for your response.
I heard that argument before and replied by saying that i had tried
Python and the program was too slow for the application i was working on
(data structures and storage) and that was my main reason to use C++. But
i was told that i need to learn more Python and be a better programmer etc
...
I felt i was completely ignored. At that time i was able to do it on my
own becuase there was a lot more private activity. I think now QGIS has
almost become corporate and there is some hesitation to share information
(not knowledge) unless a transaction happens.
In my opinion this has become a barrier to innovate.
Thank you again,
.
On Sat, Oct 26, 2019, 2:35 PM Nyall Dawson wrote:
> On Sun, 27 Oct 2019 at 09:01, Maaza Mekuria wrote:
> >
> > Thank you Etienne. I did just what you suggested. But did not het
> anywhere. I still get the same error message.
> >
> > My question did not get resolved and only for lack of information i
> can't move forward with the upgrade.
> > What i think has happened is that QGIS leadership has chosen to control
> the access gates to "ousiders" who want to program in C++ and related
> functiions in producing plugins by controlling how plugins are registered.
> >
> > It is a pity that I can't upgrade this plugin for lack of information.
> >
> > In the past i have donated money and willing to donate time and money.
> Whay is there so much secrecy on the basic C++ plugin initialization and
> registry? It does not make for a good and inclusive policy.
>
> There's no conspiracy here -- rather, c++ plugins have always been
> horrible to build, deploy and debug (especially on Windows). Over time
> the core project recognised this, realised it was a bad situation for
> developers like yourself, and started encouraging people to completely
> avoid using c++ plugins and move to Python wherever possible.
>
> I strongly suspect that the reason no-one has answered your question
> is just because no-one **knows** the answer! (I certainly don't -- I
> saw your earlier thread, and the only advice I was able to offer at
> the time was what Etienne had already suggested).
>
> Nyall
>
>
> >
> > Thank for your help anyway.
> >
> >
> > On Sun, Sep 15, 2019, 9:11 PM Etienne Trimaille <
> etienne.trimai...@gmail.com> wrote:
> >>
> >> Hi,
> >>
> >> I can't really answer your question but you should use
> https://qgis.org/api/classQgsMapLayerComboBox.html instead of creating
> your own combobox. (if possible).
> >>
> >> Etienne
> >>
> >> Le dim. 15 sept. 2019 à 10:11, Maaza Mekuria a
> écrit :
> >>>
> >>> QGIS Layer List upgrade to V3 C++ plugin - Geographic Information
> Systems Stack Exchange body,.top-bar{margin-top:1.9em}
> >>>
> >>> I was upgrading a c++ plugin that I had used in the past and almost
> eliminated all the the usual compiler errors due to version changes
> according for the current version (3.6). The plugin used to collect current
> map canvas layers in a combo list box for selection. I am getting two
> errors that I can't figure out what to do with. This code compiled without
> problem pre-2.0.
> >>>
> >>> The first happens to be about QGSMapLayer that can't be instantiated
> because it is turned as an abstract class and I am getting an error
> [Severity Code Description Project File Line Source Suppression State Error
> C2259 'QgsMapLayer': cannot instantiate abstract class tarjan_sccplugin
> C:\OSGeo4W64\apps\Qt5\include\QtCore\qlist.h 214 Build ]
> >>>
> >>> This is portion of the code generating the error. Where
> cmbNetSourceLayer is a combo-box .
> >>>
> >>> void tarjan_sccGui::populateLayers( QString const& url ) {
> cmbNetSourceLayer->clear();
> >>>
> >>> QString layerName; QString layerType;
> >>>
> >>> // fill list of layers
> >>> QMap mapLayers =
> QgsProject::instance()->mapLayers();
> >>> QMap::iterator layer_it = mapLayers.begin();
> >>>
> >>> for (; layer_it != mapLayers.end(); ++layer_it)
> >>> {
> >>> QgsVectorLayer* vl =
> dynamic_cast(layer_it.value());
> >>> if (!vl)
> >>> continue;
> >>> else
> >>>
> >>> cmbNetSourceLayer->addItem(vl->name() );
> >>> }
> >>>
> >>> The second error appears to be in explicit declaration for the plugin.
> Something has changed in how the plugins are initiated. [Severity Code
> Description Project File Line Source Suppression State Error (active)
> invalid explicit instantiation declaration tarjan_sccplugin
> d:\GIS\v3\Quantum-GIS\src\core\qgsoptionalexpression.h 82 IntelliSense ]
> >>>
> >>> No idea what must be done to overcome this error. The cited module
> appears to be an optional data module.
> >>>
> >>>
> >>> Any help is appreciated.
> >>>
> >>> ___
> >>> QGIS-Developer mailing list
> >>> QGIS-Developer@lists.osgeo.org
> >>> List info: https://lists.osgeo.org/mailman/listinfo/qgis-developer
> >>> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-developer
> >
> >
Re: [QGIS-Developer] Upgrading to V3
On Sun, 27 Oct 2019 at 09:01, Maaza Mekuria wrote:
>
> Thank you Etienne. I did just what you suggested. But did not het anywhere.
> I still get the same error message.
>
> My question did not get resolved and only for lack of information i can't
> move forward with the upgrade.
> What i think has happened is that QGIS leadership has chosen to control the
> access gates to "ousiders" who want to program in C++ and related functiions
> in producing plugins by controlling how plugins are registered.
>
> It is a pity that I can't upgrade this plugin for lack of information.
>
> In the past i have donated money and willing to donate time and money. Whay
> is there so much secrecy on the basic C++ plugin initialization and registry?
> It does not make for a good and inclusive policy.
There's no conspiracy here -- rather, c++ plugins have always been
horrible to build, deploy and debug (especially on Windows). Over time
the core project recognised this, realised it was a bad situation for
developers like yourself, and started encouraging people to completely
avoid using c++ plugins and move to Python wherever possible.
I strongly suspect that the reason no-one has answered your question
is just because no-one **knows** the answer! (I certainly don't -- I
saw your earlier thread, and the only advice I was able to offer at
the time was what Etienne had already suggested).
Nyall
>
> Thank for your help anyway.
>
>
> On Sun, Sep 15, 2019, 9:11 PM Etienne Trimaille
> wrote:
>>
>> Hi,
>>
>> I can't really answer your question but you should use
>> https://qgis.org/api/classQgsMapLayerComboBox.html instead of creating your
>> own combobox. (if possible).
>>
>> Etienne
>>
>> Le dim. 15 sept. 2019 à 10:11, Maaza Mekuria a écrit :
>>>
>>> QGIS Layer List upgrade to V3 C++ plugin - Geographic Information Systems
>>> Stack Exchange body,.top-bar{margin-top:1.9em}
>>>
>>> I was upgrading a c++ plugin that I had used in the past and almost
>>> eliminated all the the usual compiler errors due to version changes
>>> according for the current version (3.6). The plugin used to collect current
>>> map canvas layers in a combo list box for selection. I am getting two
>>> errors that I can't figure out what to do with. This code compiled without
>>> problem pre-2.0.
>>>
>>> The first happens to be about QGSMapLayer that can't be instantiated
>>> because it is turned as an abstract class and I am getting an error
>>> [Severity Code Description Project File Line Source Suppression State Error
>>> C2259 'QgsMapLayer': cannot instantiate abstract class tarjan_sccplugin
>>> C:\OSGeo4W64\apps\Qt5\include\QtCore\qlist.h 214 Build ]
>>>
>>> This is portion of the code generating the error. Where cmbNetSourceLayer
>>> is a combo-box .
>>>
>>> void tarjan_sccGui::populateLayers( QString const& url ) {
>>> cmbNetSourceLayer->clear();
>>>
>>> QString layerName; QString layerType;
>>>
>>> // fill list of layers
>>> QMap mapLayers = QgsProject::instance()->mapLayers();
>>> QMap::iterator layer_it = mapLayers.begin();
>>>
>>> for (; layer_it != mapLayers.end(); ++layer_it)
>>> {
>>> QgsVectorLayer* vl = dynamic_cast(layer_it.value());
>>> if (!vl)
>>> continue;
>>> else
>>>
>>> cmbNetSourceLayer->addItem(vl->name() );
>>> }
>>>
>>> The second error appears to be in explicit declaration for the plugin.
>>> Something has changed in how the plugins are initiated. [Severity Code
>>> Description Project File Line Source Suppression State Error (active)
>>> invalid explicit instantiation declaration tarjan_sccplugin
>>> d:\GIS\v3\Quantum-GIS\src\core\qgsoptionalexpression.h 82 IntelliSense ]
>>>
>>> No idea what must be done to overcome this error. The cited module appears
>>> to be an optional data module.
>>>
>>>
>>> Any help is appreciated.
>>>
>>> ___
>>> QGIS-Developer mailing list
>>> QGIS-Developer@lists.osgeo.org
>>> List info: https://lists.osgeo.org/mailman/listinfo/qgis-developer
>>> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-developer
>
> ___
> QGIS-Developer mailing list
> QGIS-Developer@lists.osgeo.org
> List info: https://lists.osgeo.org/mailman/listinfo/qgis-developer
> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-developer
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Re: [QGIS-Developer] Upgrading to V3
Thank you Etienne. I did just what you suggested. But did not het
anywhere. I still get the same error message.
My question did not get resolved and only for lack of information i can't
move forward with the upgrade.
What i think has happened is that QGIS leadership has chosen to control the
access gates to "ousiders" who want to program in C++ and related
functiions in producing plugins by controlling how plugins are registered.
It is a pity that I can't upgrade this plugin for lack of information.
In the past i have donated money and willing to donate time and money.
Whay is there so much secrecy on the basic C++ plugin initialization and
registry? It does not make for a good and inclusive policy.
Thank for your help anyway.
On Sun, Sep 15, 2019, 9:11 PM Etienne Trimaille
wrote:
> Hi,
>
> I can't really answer your question but you should use
> https://qgis.org/api/classQgsMapLayerComboBox.html instead of creating
> your own combobox. (if possible).
>
> Etienne
>
> Le dim. 15 sept. 2019 à 10:11, Maaza Mekuria a
> écrit :
>
>> QGIS Layer List upgrade to V3 C++ plugin - Geographic Information Systems
>> Stack Exchange body,.top-bar{margin-top:1.9em}
>>
>> I was upgrading a c++ plugin that I had used in the past and almost
>> eliminated all the the usual compiler errors due to version changes
>> according for the current version (3.6). The plugin used to collect current
>> map canvas layers in a combo list box for selection. I am getting two
>> errors that I can't figure out what to do with. This code compiled without
>> problem pre-2.0.
>>
>> The first happens to be about QGSMapLayer that can't be instantiated
>> because it is turned as an abstract class and I am getting an error
>> [Severity Code Description Project File Line Source Suppression State Error
>> C2259 'QgsMapLayer': cannot instantiate abstract class tarjan_sccplugin
>> C:\OSGeo4W64\apps\Qt5\include\QtCore\qlist.h 214 Build ]
>>
>> This is portion of the code generating the error. Where
>> cmbNetSourceLayer is a combo-box .
>>
>> void tarjan_sccGui::populateLayers( QString const& url ) {
>> cmbNetSourceLayer->clear();
>>
>> QString layerName; QString layerType;
>>
>> // fill list of layersQMap mapLayers =
>> QgsProject::instance()->mapLayers();QMap::iterator
>> layer_it = mapLayers.begin();
>> for (; layer_it != mapLayers.end(); ++layer_it){
>> QgsVectorLayer* vl = dynamic_cast(layer_it.value());
>> if (!vl)
>> continue;
>> else
>>
>> cmbNetSourceLayer->addItem(vl->name() );}
>>
>> The second error appears to be in explicit declaration for the plugin.
>> Something has changed in how the plugins are initiated. [Severity Code
>> Description Project File Line Source Suppression State Error (active)
>> invalid explicit instantiation declaration tarjan_sccplugin
>> d:\GIS\v3\Quantum-GIS\src\core\qgsoptionalexpression.h 82 IntelliSense ]
>>
>> No idea what must be done to overcome this error. The cited module
>> appears to be an optional data module.
>>
>>
>> Any help is appreciated.
>> ___
>> QGIS-Developer mailing list
>> QGIS-Developer@lists.osgeo.org
>> List info: https://lists.osgeo.org/mailman/listinfo/qgis-developer
>> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-developer
>
>
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Re: [QGIS-Developer] News panel?
Hi Raymond, You can confirm it by yourself. Just open https://feed.qgis.org/ and you will see the entire news feed. Best regards, Jorge Às 16:18 de 26/10/19, Raymond Nijssen escreveu: > Same for me in 3.10 and it seems also gone in qgis-master. In the > settings the "show qgis newsfeed" option is checked. > > Maybe there is no news?? > > Raymond > > Terglobo > Fahrenheitstraat 1 > 5223 BJ 's-Hertogenbosch > The Netherlands > +31 (0) 6 25 31 49 83 > > On 26-10-19 08:42, Paolo Cavallini wrote: >> Hi all, >> I just compiled a fresh 3.10, and I cannot find the new News panel at >> startup. What is its current status? >> Thanks. >> > ___ > QGIS-Developer mailing list > QGIS-Developer@lists.osgeo.org > List info: https://lists.osgeo.org/mailman/listinfo/qgis-developer > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-developer J. Gustavo -- Jorge Gustavo Rocha Departamento de Informática Universidade do Minho 4710-057 Braga Gabinete 3.29 (Piso 3) Tel: +351 253604480 Fax: +351 253604471 Móvel: +351 910333888 skype: nabocudnosor ___ QGIS-Developer mailing list QGIS-Developer@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-developer Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-developer
Re: [QGIS-Developer] News panel?
Same for me in 3.10 and it seems also gone in qgis-master. In the settings the "show qgis newsfeed" option is checked. Maybe there is no news?? Raymond Terglobo Fahrenheitstraat 1 5223 BJ 's-Hertogenbosch The Netherlands +31 (0) 6 25 31 49 83 On 26-10-19 08:42, Paolo Cavallini wrote: Hi all, I just compiled a fresh 3.10, and I cannot find the new News panel at startup. What is its current status? Thanks. ___ QGIS-Developer mailing list QGIS-Developer@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-developer Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-developer
[QGIS-Developer] News panel?
Hi all, I just compiled a fresh 3.10, and I cannot find the new News panel at startup. What is its current status? Thanks. -- Paolo Cavallini - www.faunalia.eu QGIS.ORG Chair: http://planet.qgis.org/planet/user/28/tag/qgis%20board/ ___ QGIS-Developer mailing list QGIS-Developer@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-developer Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-developer
