gtk:stack-hhomogeneous (object)

object -- a gtk:stack widget
homogeneous -- true to make stack horizontally homogeneous

The accessor for the hhomogeneous slot of the gtk:stack class gets or sets whether the stack is horizontally homogeneous.

If the stack is homogeneous, the stack will request the same width for all its children. If it is not, the stack may change width when a different child becomes visible.