[Qgis-user] Change of selected layer

[Möri Cedric]

Hi 

I currently try to programm a phyton plugin. Now I have to take some action if the layer in the legend changes, i.e the the current layer changes.  
 
I found the signal "selectionChanged (QgsMapLayer *layer)" of the QgsMapCanvas class and guessed, this might do the trick, but the docs says only "Emit map tool changed event" which it also says for the "mapToolSet (QgsMapTool *tool)". So theres some typo or something. 
 
My questions: 
Is the selectionChanged signal emited when the user changes his selection in the legend? If yes, how do I get it? I tried it with 
 
QObject.connect(self.iface.mapCanvas(), SIGNAL("selectionChanged (QgsMapLayer *layer)"), self.test) 
 
in the initGui() but didn't succeed. 
 
Is there another way that my plugin gets informed if the current/selected layer changes? 
 
Thanks for any advice and best regards 
Cédric 
 
 
mit freundlichen Grüssen 

 

Cédric 
Möri 

GIS-Informatiker 

 
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