Has System Overlay Present

Returns true if a system overlay is currently present over the application. A system overlay is a Meta Quest system interface, such as the Universal Menu, that appears over an application without requiring the app to close. When a system overlay is present, the application loses input focus.

HasSystemOverlayPresent is the logical complement of Has Input Focus. When HasSystemOverlayPresent returns true, HasInputFocus returns false, and vice versa.