PropertyValue[name] gets a widget property value.PropertyValue[{target, name}] gets a widget property value, specifying the target widget.PropertyValue[{target, name, index}] ...
ReleaseGUIObject[obj] closes and terminates all resources of a live GUIObject instance.
ReleaseMethod is an option to GUIRun and related functions that determines when a GUIObject is released.
Script
(GUIKit Package Symbol) Script[scriptcode] defines a script to be used either on load or during an event.
WidgetAlign[] is a widget layout placeholder that provides an alignment marker. WidgetAlign[{ref, After}, Before] makes a specific request for the next widget to align to ...
WidgetLayout is an option to Widget, WidgetReference, and WidgetGroup that contains suboptions controlling layout.
WidgetReference[id] looks up an existing widget instance using identifier id and return the underlying object.
$GUIPath lists the directories searched in attempting to find interface files.
Widget["ColorChooser"] provides a panel for making a color selection from various color model interfaces.
Widget["FileDialog"] represents an Open or Save dialog.