Applies to
Declaration
property MouseWheelFactor: Integer;
Description
This property determines the amount of vertical scrolling for every step of the mouse wheel, in unit of lines. Its default value is 3.
Setting this property to a negative value will have the effect of the component using the default wheel factor maintained by Windows (normally set from the Control Panel mouse applet). If the default wheel factor is equal to -1, the mouse wheel will have the effect of page scrolls instead of line scrolls, as per the recommended Windows behavior.