[Qgis-user] Change of selected layer
Carson Farmer
carson.farmer at gmail.com
Thu Nov 6 08:44:20 PST 2008
Möri,
> 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)
>
try:
QObject.connect(self.iface.mapCanvas(),
SIGNAL("selectionChanged(QgsMapLayer)"), self.test)
you don't want to have the *layer, and you don't want a space between
selectionChanged and (
However, I think selectionChanged refers to feature selection, such that
it emits a signal with the mapLayer who's selection has changed... I
could be reading that wrong though...
C
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