void Ctrl::SetProperty(const String& name, const Value& v);
void Ctrl::GetProperty(const String& name, Value& v);

c.SetProperty("background", Black);
c.GetProperty("background", v);

c.SetProperty("min", 123);
c.GetProperty("max", v);

c.SetProperty("xalign", "left");
c.SetProperty("xpos", 123);
c.SetProperty("yalign", "center");
c.SetProperty("ypos", 45);

c.SetProperty("pattern", "%.g");
c.SetProperty("grid" ValueArray(Vector<int>() << 5 << 6));

//would map to GetData / SetData directly i.e.
c.SetProperty("data", 345);
c.GetProperty("data", v);

c.GetProperty("count", v);

c.SetProperty("enable", true);
c.GetProperty("enable, v);

c.SetProperty("show", false);
c.SetProperty("title", "MyTitle");
c.SetProperty("tip", "GoHelp");

//query all getable properties
c.GetProperty("rprops", v);
//query all setable properties
c.GetProperty("wprops", v);

..
and many more..