gtk:widget-style-property (widget property)

widget -- a gtk:widget object
property -- a string with the name of a style property

The style property value.

Gets the value of a style property of the widget. If the style property does not exist on the widget class nil is returned. Get the default value for the arrow-spacing style property of a notebook container.

(defvar notebook (make-instance 'gtk:notebook))
=> NOTEBOOK
(gtk:widget-style-property notebook "arrow-spacing")
=> 0