Extensions to the "Attention Checker" application.
1) When I scroll, scroll value will be the interval for showing window.
2) showing for time will be time that window will be remain. after the time, window will be disappeared automatically
3) beep (use checkbox)
5) file button remove and when I start button, SaveFileDialog will be displayed. and it will save all charactors until Program ends
6) the character has to be printed in the center of the window and if the font is smaller than the window, you should paint the whole window with the background color:
7) random interval display(let's say I set the interval to 15 (minutes)
the window has to be diplayed at a random interval between 1 min and 15 min, e.g.
after 2 min, then after 14 min, then after 8 min, randomly)