Gtk::HScale (Gtk::Range): Jump-to-position by left-click instead of middle-click?

[Phong Cao <phngcv gmail com>]

Hello everybody,

I am new to Gtkmm. I am trying to develop a small music player using Gtkmm & GStreamermm. I use Gtk::HScale 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 Gtk::HScale (Gtk::Range). Instead, I have to either drag or right-mouse-click. I have tried to solve this problem for several days and still can not figure out how to use left-click to jump to different position in the Gtk::HScale (Gtk::Range). I have searched through the GTK+ & Gtkmm mail archive & reference but found no place talking about this.

Does anybody here know how to implement this functionality for Gtk::HScale (Gtk::Range)? If so I hope you can give me a hint. 

Thank you and have a good day!

-- 
Phong V. Cao

phngcv gmail com