Scrolling requests
TScrollRequestor lets you programmatically scroll a content view within a TScrollingView. TScrollingView catches and performs the scrolling requests.
The supported scroll operations are line scrolling, page scrolling, jump to home, jump to end, reveal a specified location, and apply a client supplied TGrafMatrix transform to the content view.
Any child of the scrolling view can make these requests without explicit knowledge that there is a scrolling view parent.
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