Gtk.CellArea::get_preferred_height

function vfunc_get_preferred_height(context:Gtk.CellAreaContext, widget:Gtk.Widget):void {
}

Retrieves a cell area's initial minimum and natural height.

area will store some geometrical information in context along the way; when requesting sizes over an arbitrary number of rows, it's not important to check the minimum_height and natural_height of this call but rather to consult Gtk.get_preferred_height after a series of requests.

Since 3.0