TControlScrollBar.SetIncrement procedure
Number of pixels the display area is scrolled for scroll bar or mouse wheel movements.
Declaration
procedure SetIncrement(const AValue: TScrollBarInc); virtualArguments
AValue | New value for the property. |
Description
Increment is a
TScrollBarInc property which indicates
the amount the client area in the associated control is scrolled when the
Up or
Down navigation arrows on the scroll bar are clicked. It is also used for movements of the mouse wheel on the control. The default
value is
8 pixels.
The value in Increment may be automatically recalculated in the
UpdateScrollBar method when the Smooth property is
enabled and the associated control is a TScrollingWinControl
descendant. This is done to ensure that Increment contains 10% of the value
for the Page property.
Increment is used in the ScrollHandler method when updating the
Position property for scroll bar messages received in the control.
This description is the one of Forms.TControlScrollBar.Increment.
See also
An experiment, built from development snapshots. Not the official Free Pascal or Lazarus documentation.