Introduction - If you have any usage issues, please Google them yourself
Alarm control alarm control, the control interface similar to the label (Label), by default the current time display system. Reference to the use of MSDN Visual C# create composite controls, creating ctlClockLib control library and ctlClock controls, composite controls will be used to generate ctlAlarmClock ctlClock the basis of control, by overriding parent methods and adding new methods and properties to extend ctlClock function. Finally build a test form and add controls to the Test form.