Thank you David for your response. I am just a Gtk newbie so this question is a tough one for me. Sorry for cross-posting & I won't do it again next time. Thank you and have a good day. On Saturday, November 19, 2011, David Nečas <<a href="mailto:yeti@physics.muni.cz">yeti@physics.muni.cz</a>> wrote: > > Was it really necessary to cross-post this question to *four* mailing > lists? > > On Sat, Nov 19, 2011 at 07:55:59AM -0500, Phong Cao wrote: >> I use GtkHScale for the progress bar, which is responsible for >> updating the track progress & allow user to move to different time position >> in the track. >> >> Everything works fine until now, except that I can not use left-click >> button to snap (or jump) to random position in the GtkHScale. Instead, I >> have to either drag or right-mouse-click. > > The following is a kluge, but I suppose if you want the first button to > invoke the same response as the middle button it should be all right > (written in Python for brevity): > > from gi.repository import Gtk > > def button1to2(scale, event): > if event.button == 1: > event.button = 2 > return False > > adj = Gtk.Adjustment.new(0.0, 0.0, 1.0, 0.001, 0.01, 0) > scale = Gtk.Scale.new(Gtk.Orientation.HORIZONTAL, adj) > scale.set_round_digits(3) > scale.connect("button-press-event", button1to2) > scale.connect("button-release-event", button1to2) > > window = Gtk.Window() > window.add(scale) > window.set_default_size(400, -1) > window.show_all() > window.connect("destroy", Gtk.main_quit) > Gtk.main() > > > Yeti > > -- Phong V. Cao<div><a href="mailto:phngcv@gmail.com" target="_blank">phngcv@gmail.com</a></div><div> </div>