Tooltip.setTipArea

Sets the area of the widget, where the contents of this tooltip apply, to be rect (in widget coordinates). This is especially useful for properly setting tooltips on #GtkTreeView rows and cells, #GtkIconViews, etc.

For setting tooltips on #GtkTreeView, please refer to the convenience functions for this: [gtk.tree_view.TreeView.setTooltipRow] and [gtk.tree_view.TreeView.setTooltipCell].