getIntrinsicHeight

Gets the preferred height the @paintable would like to be displayed at.

Consumers of this interface can use this to reserve enough space to draw the paintable.

This is a purely informational value and does not in any way limit the values that may be passed to method@Gdk.Paintable.snapshot.

If the @paintable does not have a preferred height, it returns 0. Negative values are never returned.