[vtkusers] How to replace 'p' key by left click mouse button?

[Leguay Romain]

Hi everyone,
I try to finish my picking.
To do this I need to replace the default key by a left click mouse button.

This next class colorized the dataSet selected in another color.

public class Test {

vtkInteractorStyle style = null;
vtkRenderer renderer = null;

vtkCellPicker picker = null;

vtkActor actor = new Actor();


   public void execute () {

       //Add my mesh to the renderer
       renderer.AddActor(actorMesh);

....
      //add the picking actor
      actor.SetMapper(<my_mapper>);
      renderer.AddActor(actor);

      picker = new vtkCellPicker();
      picker.RemoveAllObservers();
      picker.AddObserver("EndPickEvent", this, "pickerFunction");

      style = new vtkInteractorStyleUser();//TrackballCamera();
      style.AddObserver("LeftButtonPressEvent", this, "mycallback");
      vtkCanvas canvas = new vtkCanvas();
      canvas.setInteractorStyle(style);
     }

   public void mycallback() {
   
      //Go inside
         
        //Get mouse position
	vtkRenderWindowInteractor iren = style.GetInteractor();
	int [] position = iren.GetEventPosition();

         //Launch picking
	picker.Pick(position[0], position[1], 0, renderer);
   }

   public void pickerFunction() {
		 
      //Go inside
            if (((vtkCellPicker) picker).GetCellId() < 0) {
			Logger.log(Activator.getDefault(), IExtendedStatus.DEBUG,
					"Aucune zone sélectionnée");
			actor.SetMapper(null);// Delete();
		} else {
			vtkDataSet dataSetPicked = ((vtkCellPicker) picker).GetDataSet();
			IZone currentZone = null;
			for (IZone zone : dataSet.getZones()) {
				if (dataSetPicked == zone.getVtkDataSet()) {
					currentZone = zone;
					break;
				}
			}

			setZone(currentZone);

			if (currentZone != null) {
				mapper = new VtkMapper(currentZone);
				mapper.getVtkMapper().ScalarVisibilityOff();
				actor.VisibilityOn();
				actor.SetMapper(mapper.getVtkMapper());
				actor.GetProperty().SetColor(1, 0, 0)
				actor.GetProperty().SetOpacity(1);
			}
		}
	}
}

This class works just fine with the 'p' key (it's not disabled...) but when I push left mouse button, my actor is not displayed in my window (but it's going into observer methods).

I don't find the method  "default action picking".
Has anyone  got any clues?

Regards,
Romain