[Qgis-developer] Signal change Active layer

[motta.luiz at gmail.com]

Hi all,

I would like know what object emit signal, and yours name, when change 
layer active in the QGis project.

Like :
self.QObject.connect(core.QgsMapLayerRegistry.instance(), 
QtCore.SIGNAL("layerWillBeRemoved(QString)"), self.__removeLayer)

I need change information when active layer change.


Thank's
Luiz