First you have to retrieve the current layertree to do modifications: tree = QgsProject.instance().layerTreeRoot() ...and after setting your order: tree.setCustomLayerOrder(layersII) ...you have to set that a layer order should be considered: tree.setHasCustomLayerOrder(True)
On Wed, Oct 23, 2024 at 6:33 PM coder via QGIS-Developer < qgis-developer@lists.osgeo.org> wrote: > Hello > I'm trying to change the rendering order for the layers in the canvas with > the aid of QgsLayerTree. The code grabs each layer, checks whether is a > QgsMapLayer instance, and generates a reordered list (layersII). Then, the > code executes: > QgsLayerTree().setCustomLayerOrder(layersII) > but nothing happens and > print (QgsLayerTree().hasCustomLayerOrder()) > returns False. The API documentation ( > https://qgis.org/pyqgis/master/core/QgsLayerTree.html) indicates that > customLayerOrder will only be used when hasCustomLayerOrder is True. I'm > missing something here but after browsing and googling, I just haven't > figured out how to make the change in rendering order active. 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 >
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