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From: Mathew Robertson (mathew.robertson_at_[hidden])
Date: 2004-11-11 20:12:32

> > The FOX GUI has exactly this capability, you can connect a variable directly to the widget, without requiring any glue code at all. In fact, you can connect the same variable to multiple widgets at the same time (eg a 'spinner' widget and an 'editeline'), without requiring the programmer to write any type of callback mechanism.
> >
> > This works because all GUI events are bi-directional. For more information, read:
> >
> That seems a lot of code, compared to:
> Not to say about validation...

The problem with this implementation is that the 'user_name' field cannot (usually) connect to more than one widget at a time.

Also, most widget libraries dont allow you to connect a variable to a widget, and still allow user validation. This is because the widget library doesn't callback into the validation code, since it assumes that if it is connected to a widget, then no validation code is necessary.


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