Sets tooltip as the contents of the tooltip for the icon at the specified position.
Use null for tooltip to remove an existing tooltip.
See also [[email protected]_tooltip_text] and [[email protected]_icon_tooltip_markup].
If you unset the widget tooltip via [[email protected]_tooltip_text] or [[email protected]_tooltip_markup], this sets [ [email protected]:has-tooltip] to false, which suppresses icon tooltips too. You can resolve this by then calling [[email protected]_has_tooltip] to set [[email protected]:has-tooltip] back to true, or setting at least one non-empty tooltip on any icon achieves the same result.
| this |
a `GtkEntry` |
| icon_pos |
the icon position |
| tooltip |
the contents of the tooltip for the icon |