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 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 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 _______________________________________________ Qgis-developer mailing list Qgis-developer@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-developer
