From: Tool69 <kibleur.christophe@...>
Date: 2006-01-03T23:57:58+09:00
Subject: mouse coordinates in a gnome2 canvas

Hi,
I want to show the mouse coordinates inside a label in a gnome2
application if my mouse is on a canvas. How to procede ? I' ve found no
documentation on the canvas on ruby gnome2 API. rbbr is not working on
my ubuntu (no description at all), so you're my last chance...
In fact, it's not really a canvas problem but more a gtk one. I've
tried something like :

@ecran = Gdk::Display.default
canvas.signal_connect("event") do
    pos = @ecran.window_at_pointer
    @label1.set_text("x=#{pos[1]}")
    @label2.set_text("y=#{pos[2]}")
end

....but then all my drawings disappear.

Thanks in advance :
6TooL9