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I can load a layer, open a canvas, and draw the layer in the canvas using the Qgis python API.

Can I bring up the properties dialog, or even just the "Style" tab of the properties dialog, from such a standalone application? I have a bad feeling I can't because all the code is in the main Qgis Application rather than present in qgis.core and qgis.gui, and doesn't have a python interface.

Unless I've missed something, the solution might be to rebuild the dialog and its behaviour in Python, re-using the relevant .ui file?

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  • Do you need style or labels also? Style is all in gui but labels are not yet.
    – Nathan W
    Commented Jun 24, 2016 at 10:30
  • Style would be good for a start! I should probably add I'm using 2.14 Essen at the moment.
    – Spacedman
    Commented Jun 24, 2016 at 10:37
  • You can take a look at webgeodatavore.github.io/pyqgis-samples (disclaimer: I'm the author or this content) to find out most Python QGIS gui API components visually with sample code.
    – ThomasG77
    Commented Jun 24, 2016 at 14:17

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You can use the following dialog if you need only style:

QgsRendererV2PropertiesDialog

Usage:

dlg = QgsRendererV2PropertiesDialog(layer, QgsStyleV2.defaultStyle(), embedded=False)
dlg.setMapCanvas(canvas)
dlg.exec_()
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  • Yes! Needs a canvas.refresh() to reflect changes unless I can add an "apply" button with my Qt skillz...
    – Spacedman
    Commented Jun 24, 2016 at 10:51

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