3 Qt Exercises After 1 Week Classess

After one week classes, we are asked to write some codes.

 1. Something like ping-pong. >> (2 buttons are used, one as ball and another as board).  

 2. A simple painter. >> Undo

 3. An address book records some basic information. >> Open/Save/Insert/Delete/Head/Prev/Next/Tail

 

 It's a pity that I don't have time to improve them at this moment. Because more other lessons are there.