# Posting Events

PostDeferredCall tells LabWindows/CVI to call a specific function the next time LabWindows/CVI processes events.

You typically call PostDeferredCall in a function you install as an asynchronous interrupt handler. The types of operations you can perform in an asynchronous interrupt handler are limited. For example, you cannot freely access global variables. Pass to PostDeferredCall the name of a function that contains the code you cannot include in the asynchronous interrupt handler.