Thanks Martin It's working fine now! On Tue, May 22, 2012 at 8:35 PM, Martin Dobias <wonder...@gmail.com> wrote: > On Mon, May 21, 2012 at 1:26 AM, Ricardo Filipe Soares Garcia da > <ricardo.garcia.si...@gmail.com> 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
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