GtkTooltips::set_tip
void set_tip(
GtkWidget
widget
, string tip_text, string tip_private);
Sets the tooltip for a specific widget. The tip_text
is will be visible when the user hovers the button for a specific
delay.
The tip_private should be a longer description
of the function the widget has and can be made visible via
a GtkTipsQuery object
("What's this" function).