SmoothScroll 屬性

When SmoothScroll is True, non-thumb scrollbar commands such as line up/down and page up/down animate toward their target offset in short timer-driven segments instead of jumping in one paint pass.

Dragging the scrollbar thumb still tracks immediately so users can scrub large documents without waiting for animation catch-up.

All TPdfView display properties trigger a repaint when assigned; you can change several in sequence without flicker because the redraw is coalesced into a single invalidation.

• Set design-time defaults in the Object Inspector or assign at runtime before Active := True.
• Starting a mouse pan, changing page/display mode, or changing zoom cancels any in-flight scroll animation and applies the new view state immediately.
• SmoothScroll is view-local; replacing PdfView1.Pdf does not copy view-only settings from the old component relationship.