API Reference > imodeljs-frontend > Views > Viewport > onViewportChanged onViewportChanged Beta onViewportChanged: BeEvent<(vp: Viewport, changed: ChangeFlags) => void> = new BeEvent<(vp: Viewport, changed: ChangeFlags) => void>() Event called on the next frame after any of the viewport's ChangeFlags changes. Defined in core/frontend/src/Viewport.ts Line 624 Last Updated: 13 June, 2024