On Mon, May 21, 2012 at 1:26 AM, Ricardo Filipe Soares Garcia da <[email protected]> wrote: > Hi list > > I am writing a plugin that creates new features. According to the > pyqgis cookbook[0], and the API docs[1], when I call the addFeatures > method on a QgsVectorLayer, the features should get added to the > layers editing buffer. It is my understanding that this action ought > to be undo-able, since the changes haven't been commited yet. But the > undo icon in the QGIS GUI doesn't seem to be aware of the changes that > the plugin is making to the layer. Do I have to hook up the changes to > the undo/redo stack myself? How can I do this?
Ooops, it seems that some documentation is missing! I have just added some notes to PyQGIS cookbook, hope that helps: https://github.com/qgis/QGIS-Developer-Cookbook/commit/869c9e19af3278f67770895326fb9fbcfeece848 > Also, when I press the 'toggle editing' button in the digitizing > toolbar, in order to save the changes I am getting a strange > behaviour: > > - If I choose to save my changes, everything goes fine, > - If I choose to close without saving, QGIS crashes with: > > Fatal: ASSERT: "mAddedFeatures.isEmpty()" in file > /home/ricardo/dev/Quantum-GIS/src/core/qgsvectorlayer.cpp, line 3982 That's a check to ensure that the undo stack is working properly - it will not crash if you wrap it into the edit commands. Martin _______________________________________________ Qgis-developer mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/qgis-developer
