Timer API

The Timer API provides essential timer services for Microsoft ActiveX Controls, supports external reference clocks, and enables synchronization between controls and scripts.

Overviews/Tutorials

Topic	Contents
Timer API	Timers are essential to multimedia and animation applications. Good animation depends on timer accuracy and synchronization between multiple time-dependent components. Developers can use the Microsoft Timer API to synchronize time-dependent components such as audio and video clips.

 

Objects

Topic	Contents
ITimer	This object provides access to timer functions such as ITimer::Freeze and ITimer::GetTime.
ITimerService	This object creates a timer object and retrieves and sets named timers.
ITimerSink	This object provides access to a timer's schedule.

 

Interfaces

Topic	Contents
ITimer	Implements timer functions.
ITimerEx	Provides a timer that automatically halts when the page is not visible or is loaded into an inactive tab.
ITimerService	Creates, gets, and sets timer objects.
ITimerSink	Implements a method that is called by the timer service for a scheduled event.

 

Methods

Topic	Contents
ITimer::Advise	Schedules single or periodic notifications.
ITimerService::CreateTimer	Creates a timer object.
ITimer::Freeze	Halts the timer temporarily.
ITimerService::GetNamedTimer	Gets the named timer.
ITimer::GetTime	Gets the current time of the timer.
ITimerSink::OnTimer	Called by the timer service for a scheduled event.
ITimerEx::SetMode	Sets the visibility mode of the timer.
ITimerService::SetNamedTimerReference	Replaces the named timer's reference timer with a new reference timer.
ITimer::Unadvise	Cancels an event request.