I\'m creating an Adobe Flex application and I have a Text control (mx:Text), which is supposedly used when you need multiline noneditable text (as opposed to a Label, which
Percentage widths and heights actually resolve to their pixel equivalents, so using them should achieve the wrapping and relative sizing you're looking for. For example:
That is, provided there's a width setting of any kind, relative sizing (an explicit number, a percentage, a constraint-based anchor -- e.g., top, right, bottom, left -- etc.) should cause the text to wrap naturally. Does this approach not work with the layout you're using? Without some code, it's hard to tell, but you're right -- wrapping does require setting a width-related property on the container.
Resizing and wrapping can be a little tricky, though, depending on the context, so if you find this doesn't work, try posting some code -- I'm sure one of us will be able to help you figure it out.