TScrollBar.LargeChange property
The distance to scroll on an click beneath the slider.
Declaration
property LargeChange:;Description
A large change is produced by clicks on the blank area above or below the slider; it is rather analogous to the Page Down or Page Up functions of the Keyboard, and is typically set up to move the slider and the control contents by a full page (window size).
Use SmallChange for the value applied when the Up or Down arrows are clicked, or when one of the cursor keys is pressed to navigate in the associated control.
This description is the one of StdCtrls.TCustomScrollBar.LargeChange.
An experiment, built from development snapshots. Not the official Free Pascal or Lazarus documentation.