[Qgis-developer] How to stopediting/rollback in a plugin before changing the project-file

[bjsvwpfe]

Hi Martin,



> What about using layerWillBeRemoved signal from QgsMapLayerRegistry? 
> 

thanks for your answer. I've already tried layerWillBeRemoved.
But it seems that after clicking the Discard-Button SIGNAL removedAll() is
sent by QgsMapLayerRegistry.
And after this signal all layers in the QgsMapLayerRegistry have been
deleted. layerWillBeRemoved works very good when I delete one layer but when
changing the project removedAll() is sent and I get the following error: 
RuntimeError: underlying C/C++ object has been deleted

Any other hints?

Best regards

Michael

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