Delphi Binding Expressions, Properties and Components

Binding Two Components

In practical terms, suppose you have a form with a SpinEdit and a ProgressBar. A managed binding allows you to provide an input expression (with one or more input objects) and an output expression (again with one or more objects). As you can see in the code below, each object is associate to the expression providing a name, like spin1 for the SpinEdit1 component, and the expression can refer to the object and its properties, as in spin1.Value. The same happens for the output. You can also specify an output converter, which I've omitted here:

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