Sets text as the contents of the tooltip.
If text contains any markup, it will be escaped.
This function will take care of setting [[email protected]:has-tooltip] as a side effect, and of the default handler for the [
[email protected]:GtkWidget:query-tooltip] signal.
See also [[email protected]_text].
| this |
a `GtkWidget` |
| text |
the contents of the tooltip for this |