Tooltip


Object Hierarchy:

Object hierarchy for Tooltip

Description:

[ CCode ( type_id = "gtk_tooltip_get_type ()" ) ]
public class Tooltip : Object

Basic tooltips can be realized simply by using set_tooltip_text or set_tooltip_markup without any explicit tooltip object.

When you need a tooltip with a little more fancy contents, like adding an image, or you want the tooltip to have different contents per TreeView row or cell, you will have to do a little more work:

  • Set the has_tooltip property to true, this will make GTK monitor the widget for motion and related events which are needed to determine when and where to show a tooltip.
  • Connect to the query_tooltip signal. This signal will be emitted when a tooltip is supposed to be shown. One of the arguments passed to the signal handler is a GtkTooltip object. This is the object that we are about to display as a tooltip, and can be manipulated in your callback using functions like set_icon. There are functions for setting the tooltip’s markup, setting an image from a named icon, or even putting in a custom widget.

    Return true from your query-tooltip handler. This causes the tooltip to be show. If you return false, it will not be shown.


Namespace: Gtk
Package: gtk4

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