Enables or disables the emission of #GtkStatusIcon::query-tooltip on @status_icon. A value of true indicates that @status_icon can have a tooltip, in this case the status icon will be queried using #GtkStatusIcon::query-tooltip to determine whether it will provide a tooltip or not.
Note that setting this property to true for the first time will change the event masks of the windows of this status icon to include leave-notify and motion-notify events. This will not be undone when the property is set to false again.
Whether this property is respected is platform dependent. For plain text tooltips, use #GtkStatusIcon:tooltip-text in preference.
Set hasTooltip property.