[Qgis-developer] QGIS plugin : connect to polygonselect Maptool signals

[Cev Hillan]

Hello to all !

Working on a new QGIS plugin I am trying to connect a custom function to 
the mouse right-clic signal, while using the polygon select maptool.

I have activated the maptool through :

|def  run(self):
     self.iface.actionSelectPolygon().trigger()|

And would now like to connect my selectSite function to a 
canvasReleaseEvent or similar signal. From an interesting tutorial here 
<http://www.qgisworkshop.org/html/workshop/plugins_tutorial.html> I 
adapted the code and tried the line below which failed :

|def  run(self):
     self.iface.actionSelectPolygon().trigger()
     result=  QObject.connect(self.canvas.mapTool(),  SIGNAL("canvasReleaseEvent()"),  self.selectSite)

def  selectSite(self):
     QMessageBox.information(  self.iface.mainWindow(),"Info",  "in selectSite function"  )|

Any ideas or hints on how I can achieve my goal ?

I understand I could reimplement my own polygon selecting tool and 
customize it, but it seems like an overkill and am looking for something 
simpler - if possible.
Is there another way around by connecting to a more generic Qt mouse 
click signal sent by canvas or Qt ?

Thanks for help.

Cev.


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