You have a game with a lot of text, and Do you want put in a beautiful frame? this is the solution!
You only need design a beautiful frame and take this steps!
I only working with default design, but imagine the possibilities.
First you need a 9 patch and text object.
Remember, the hotspot of both objects must to be Top left.... because if you use the center, the reference position for 9 patch can be lost, for example when you set size of the box of text.
In the event sheet you only need create a event with "Every tick" and put the following acts
-->9 patch "Set position to (Text.X-5, Text.Y-5)"
-->9 patch "Set size to (TextWitdth+15,TextHeigth+15)
(the numbers can be changed based your likes :D)
I have a example working, write something in the text box and press enter y voila! the 9 patch adjust to the text!