Template library for properties in C++ comparable this: gadget.colour = "redness"; to exchange gadget colour. In division Widget usance: prop: : Property Widget, Color, &Widget: : set_color, &Widget: : get_color colour; Supports binding properties together so that the values of several properties of different objects will be automatically synchronized to clutches the same value. This library has its own signals (that is Observer Pattern from object oriented methodology) implementation or buttocks be co-worked with the existing signal organization. Supports binding properties with a transformation by a functor (e.g. with a C++ serve). You buttocks link properties of different types with optional transformation. Additionally has classes for comfortable adding properties to object on-the-fly: holding(obj, &Class: : hardening, &Class: : catch). This library is 100% efficient, that is using it does not diminution efficiency compared with lineal coding in C++. The library has good API documentation. In unforbearing: simplify your mould, diminution development time with any kinds of C++ projects, especially GUI projectys. Price includes lifetime free updates. See article http: / / ex-code.com / articles / binding-properties.html