Qt object on Gradebook
Done:
- change scores by spinbox or horizontalbars
- when any score changes, the total socre is also changed
- there are two schemes to calculate the grade
- "show result" button shows result in a pop-u window
- press "close" to close the window
- radio button should is set to Scheme A before the user do anything
Undone:
- radio button is not connected to score change yet
- What should pic 10a/ 10b do????