Notice how the text fields respond to invalid data and the
status bar at the bottom offers additional information. If I want
to create a Flex UI that has the same kind of functionality (and
maybe prettier), are there stock controls (or controls for
purchase) that do this for me? Do I have to roll-my-own? I'm really
interested in a RAD environment so I don't have to code the HTML
Flex can do all of this. You will have to write code.
The Flex Text Input component supports built-in data
validators and formatters, complete with error messages, tool tip
pop-ups and the red border color when vaildation fails. It's real
easy to do.
Never bothered with using the browser's staus bar. Flex can
Interface, though. But I'd just use a label component underneath
the form, for example, to display any other messages.