getPreferredSize

open fun getPreferredSize(minimumSize: Requisition?, naturalSize: Requisition?)

Retrieves the minimum and natural size of a widget, taking into account the widget’s preference for height-for-width management.

This is used to retrieve a suitable size by container widgets which do not impose any restrictions on the child placement. It can be used to deduce toplevel window and menu sizes as well as child widgets in free-form containers such as GtkFixed.

Handle with care. Note that the natural height of a height-for-width widget will generally be a smaller size than the minimum height, since the required height for the natural width is generally smaller than the required height for the minimum width.

Use id@gtk_widget_measure if you want to support baseline alignment.

Parameters

minimumSize

location for storing the minimum size

naturalSize

location for storing the natural size