Example: Creating the subapplication DevelopStopwatch
When completed, 
DevelopStopwatch displays the following when you open an instance of its defined class 
Stopwatch: 

Selecting the Start push button begins the timer and displays 00:00:00 in the Hours:Minutes:Seconds text pane. Selecting Stop/Interval displays the elapsed time in the text pane. (You can select Stop/Interval repeatedly.) To stop the timer, you must close the window. 
Last modified date: 02/26/2019