# ASYNC_ATTR_INTERVAL

Data Type: | decimal
Description: | The interval (in seconds) at which the asynchronous timer control callback function is called. The asynchronous timers are implemented using the Windows multimedia timer functions. Therefore, depending on the model of the machine you are working on, the minimum interval value that you can use may differ. An interval less than the resolution of the system clock results in timer events with an interval equal to the clock resolution. If the timer has already started, setting ASYNC_ATTR_INTERVAL resets the timer.