[Qgis-developer] Qgis standalone apps

[Massimo Di Stefano]

Hi Giuseppe, 

i tried with the "args" variable, 
i have :


MacBook-Pro-15-di-sasha:~ sasha$ python /qgistry.py
Traceback (most recent call last):
  File "/qgistry.py", line 66, in <module>
    app = MainApp(sys.args)
AttributeError: 'module' object has no attribute 'args'


so i tried also without the "args" value,
what i'm missing ?

thanks to help me,

Massimo.


Il giorno 15/set/2010, alle ore 14.16, Giuseppe Sucameli ha scritto:

> Hi Massimo,
> as I wrote to you:
> 
> class MainApp(QApplication):
>     def __init__(self, args):
>         QApplication.__init__(self, args)
>         wdg = MyWdg()
>         wdg.show()
>         self.exec_()
> 
> if __name__ == "__main__":
>         import sys
>     app = MainApp(sys.args)
> 
> That is, you missed the "args" variable ;)
> Cheers.
> 
> 
> On Wed, Sep 15, 2010 at 1:52 PM, Massimo Di Stefano <massimodisasha at yahoo.it> wrote:
> sorry, i correct the link to the code i'm tring.
> my apologize :-/
> 
> this one should work :
> 
>> http://www.geofemengineering.it/data/qgistry.py
> 
> Il giorno 15/set/2010, alle ore 12.21, Massimo Di Stefano ha scritto:
> 
>> Hello All,
>> 
>> 
>> i'm tring to apply the changes you suggest me .. but with no good results
>> (again my fault)
>> 
>> i tried to change the code to :
>> 
>> http://www.geogemengineering.it/data/qgistry.py
>> 
>> but i got : 
>> 
>> python /qgistry.py
>> Traceback (most recent call last):
>>   File "/qgistry.py", line 68, in <module>
>>     app = MainApp()
>>   File "/qgistry.py", line 61, in __init__
>>     QApplication.__init__(self)
>> TypeError: arguments did not match any overloaded call:
>>   QApplication(list-of-str): not enough arguments
>>   QApplication(list-of-str, bool): not enough arguments
>>   QApplication(list-of-str, QApplication.Type): not enough arguments
>> 
>> 
>> can you help me to have it running ?
>> 
>> thanks a lot !!!
>> 
>> Massimo.
>> 
>> 
>> Il giorno 10/set/2010, alle ore 02.07, qgis-developer-request at lists.osgeo.org ha scritto:
>> 
>>> Hi Massimo,
>>> 
>>> On Fri, Sep 10, 2010 at 12:10 AM, Massimo Di Stefano <
>>> massimodisasha at yahoo.it> wrote:
>>> 
>>>> Hi All,
>>>> 
>>>> i'm tring to start some coding on the qgis api
>>>> i'm on osx 10.6.4 running qgis 1.6
>>>> 
>>>> following the example from :
>>>> 
>>>> 
>>>> 
>>>> http://mapserver.sk/~wonder/qgis/html/canvas.html#using-map-tools-with-canvas<http://mapserver.sk/%7Ewonder/qgis/html/canvas.html#using-map-tools-with-canvas>
>>>> 
>>>> it works fine if i call it from a qgis-python shell
>>>> 
>>>> but i tried to make small changes to have it running as a standalone
>>>> application,
>>>> 
>>>> i eliminated the "layer" from the init line :
>>>> 
>>>> QMainWindow.__init__(self)
>>>> 
>>>> used a custom extent :
>>>> 
>>>> self.canvas.setExtent('15.1845401903089403,40.6214856769878665 :
>>>> 15.2339879807105998,40.6477493100907381')
>>>> 
>>>> and commented out the line :
>>>> 
>>>> #self.canvas.setLayerSet( [ QgsMapCanvasLayer(layer) ] )
>>>> 
>>>> then from a standard python shell, i tried :
>>>> 
>>>>>>> import mywnd
>>>>>>> dir(mywnd)
>>>> ['MyWnd', 'QAction', 'QMainWindow', 'QString', 'QgisInterface',
>>>> 'QgsAnnotationItem', 'QgsColorButton', 'QgsColorButtonV2',
>>>> 'QgsComposerView', 'QgsEncodingFileDialog', 'QgsFormAnnotationItem',
>>>> 'QgsGenericProjectionSelector', 'QgsLegendInterface', 'QgsMapCanvas',
>>>> 'QgsMapCanvasItem', 'QgsMapCanvasLayer', 'QgsMapCanvasMap',
>>>> 'QgsMapCanvasSnapper', 'QgsMapOverviewCanvas', 'QgsMapTip', 'QgsMapTool',
>>>> 'QgsMapToolEmitPoint', 'QgsMapToolPan', 'QgsMapToolZoom',
>>>> 'QgsMessageViewer', 'QgsProjectBadLayerGuiHandler', 'QgsProjectionSelector',
>>>> 'QgsQuickPrint', 'QgsRendererV2PropertiesDialog', 'QgsRendererV2Widget',
>>>> 'QgsRubberBand', 'QgsStyleV2ManagerDialog', 'QgsSymbolLayerV2Widget',
>>>> 'QgsSymbolV2PropertiesDialog', 'QgsSymbolV2SelectorDialog',
>>>> 'QgsTextAnnotationItem', 'QgsVertexMarker', 'Qt', 'SIGNAL', '__builtins__',
>>>> '__doc__', '__file__', '__name__', '__package__']
>>>>>>> w = mywnd.MyWnd()
>>>> QWidget: Must construct a QApplication before a QPaintDevice
>>>> Abort trap
>>>> 
>>> the MyWnd is a QWidget.
>>> 
>>> You must create a QApplication instance and only after this you can
>>> show widgets within it.
>>> 
>>> Here an example (main.py):
>>> 
>>> 
>>> from PyQt4.QtGui import QApplication
>>> from mywdg import MyWdg
>>> 
>>> class MainApp(QApplication):
>>>    def __init__(self, args):
>>>        QApplication.__init__(self, args)
>>>        wdg = MyWdg()
>>>        wdg.show()
>>>        self.exec_()
>>> 
>>> if __name__ == "__main__":
>>>        import sys
>>>    app = MainApp(sys.args)
>>> 
>>> 
>>> Then open a terminal and run: python main.py
>>> and if all went fine you can see your widget.
>>> 
>>> Cheers.
>>> 
>>> 
>>>> 
>>>> it give me a python crash ... obviously i'm missing something basilar,
>>>> 
>>>> have you any clue on what i need to change to have the example working
>>>> outside qgis ?
>>>> 
>>>> 
>>>> thanks a lot !!!
>>>> 
>>>> regards,
>>>> 
>>>> Massimo
>> 
> 
> 
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> 
> 
> 
> -- 
> Giuseppe Sucameli

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