Timer
This application features two interfaces Timer & Stopwatch, easily switched with a tap on the two buttons at the bottom.
Timer Interface: Start the timer with a tap, and watch the seconds increment on the screen.
Stopwatch Interface: Select your start time using three adjustable rollers for hours, minutes, and seconds. Upon starting, an animation begins as your selected time centers and begins countdown.

Implementation
Code
Function app_clock_ui_design
is located in file realgui/example/screen_454_454/gui_menu/app_clock.c
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Widgets Tree Design

Timer Widgets Tree Design