class gui::widget
This class is the base for all widgets. Any derived class may be implicitly upcast to widget, and a widget may be explicitly downcast with a narrowing constructor (although this may throw an exception if the narrowing conversion cannot be performed). This class does not have any functionality useful to the end-user; its primary purpose is to allow for heterogeneous collections of widgets.
Copy-construct from another widget. This does not duplicate the underlying widget, but rather provides an additional reference to it. Does not throw.
Internal constructor reserved for the use of the library implementor. Does not throw.
Exchange this widget with another; actually just exchanges references to the underlying widgets. Does not throw.
Re-assign this widget to refer to another widget. Does not throw.
Internal function reserved for the use of the library implementor. Returns a boost::shared_pointer to the underlying widget implementation. Does not throw.
Internal function reserved for the use of the library implementor. Returns a pointer to the underlying implementation API of the widget. Exceptions may be generated by the implementation.