[Pharo-project] Mouse handler on a morph

Hi. I would like to know if it's possible to add a mouse handler on a specific morph ? I have a window and i would like to know the position of my mouse only in this window. For exemple i also use : self on: #mouseDown send: #captureMouse: to: self. But it give me the mouse position in pharo environment and not only in my window. Thanks :) -- Douaille Erwan <douaille.erwan@gmail.com>