Example SMS application in QT

I am looking for help to create UI for SMS (Short Message Service) application.
Similar to iPhone interface.
This would contain
1. table of message bubbles of varying sizes depending on the text size
2. An input bubble with expanding size as the text is entered
3. Invoking a keyboard when input box is selected.

Appreciate suggestions on examples I could take a look at and on the widgets that
I could use to try some prototype UI.

We are using QT 4.8.3 over Linux (embedded).