title: FormLayout, FormData and controls
body: <p>can someone please explain to me how FormData on FormLayout works? I'm trying to understand the FormAttachment constructors and its parameters (numerator, offset, denominator). When do you need only one of them, two of them or all of the parameters... Also, if i have a group (or a composite) which will add widgets like buttons and labels which will need to be resized as per resolution using FormData, does the Group need to have a FormLayout also? I tried specifying a width of a group with form layout but no change</p>