Programmatically popup a tooltip

[ofey aikon <ofey aikon gmail com>]

Is there a way to programmatically popup a tooltip using Gtk2::Tooltip
? I tried the force_window() api but that doesn't seem to be meant for
this purpose.

If you are wondering what I am upto, I want to move my mouse over a
Gtk2::Image and based on the co-ordinates, I want to popup a tooltip
and display different text.

If tooltip is not meant for that, then I'll have to write my own
tooltip code using Gtk2::Window, i guess ?

Regards,

Ofey