1. A computer system comprising: a computer comprising a processor and a memory operatively coupled together; an operating system executing in the processor; an application program running under control of the operating system, the application program having an event-generating component; and an application program interface associated with the event-generating component, the interface operative to receive data from the operating system and send data to the operating system, and enabling the setting of a user-determined status condition, wherein data is returned to the operating system only if the status condition is turned on.