Sets tooltip as the contents of the tooltip for the icon at the specified position. tooltip is assumed to be marked up with the [Pango text markup language]PangoMarkupFormat.
Use NULL for tooltip to remove an existing tooltip.
See also Widget.setTooltipMarkup and Entry.setIconTooltipText.
the icon position
the contents of the tooltip for the icon, or NULL
2.16
Sets tooltip as the contents of the tooltip for the icon at the specified position. tooltip is assumed to be marked up with the [Pango text markup language]PangoMarkupFormat.
Use NULL for tooltip to remove an existing tooltip.
See also Widget.setTooltipMarkup and Entry.setIconTooltipText.