libpropc++ (for C++) 

Template library for properties in C++ (used like 'widget.color = "red";). In class Widget use: prop::PropertyWidget, Color, &Widget::set_color, &Widget::get_color color; Binding properties to auto-synchronize their values.
c++ properties c++ template library c++ library foundational library libsigc++ signal programming oo programming object oriented programming object orientated programming signals gui programming object oriented methodology oo method oo methodology

Binding Properties for GtkAda 

Extension of GtkAda GUI toolkit for binding together properties of objects, that is synchronizing properties so that when a property changes, bound properties automatically change accordingly. Greatly simplifies and increases reliability of GUI programming.
gtkada gtk gtk+ ada library ada 95 library ada95 library data binding property ui library gui library gnome libraries