gtk:stack-interpolate-size (object)

object -- a gtk:stack widget
interpolate -- true if child sizes are interpolated

Accessor of the interpolate-size slot of the gtk:stack class. The gtk:stack-interpolate-size function returns whether the stack is set up to interpolate between the sizes of children on page switch. The (setf gtk:stack-interpolate-size) function sets the property.

If the interpolate-size property is set to true, the stack will interpolate its size between the current one and the one it will take after changing the visible child, according to the set transition duration.