IconView.setTooltipColumn

If you only plan to have simple (text-only) tooltips on full items, you can use this function to have gtk.icon_view.IconView handle these automatically for you. column should be set to the column in icon_view’s model containing the tooltip texts, or -1 to disable this feature.

When enabled, GtkWidget:has-tooltip will be set to true and icon_view will connect a GtkWidget::query-tooltip signal handler.

Note that the signal handler sets the text with gtk.tooltip.Tooltip.setMarkup, so &, <, etc have to be escaped in the text.