TCustomGrid.ScrollBy procedure
Scrolls the non-fixed area for the control by the specified delta values.
Declaration
procedure ScrollBy(DeltaX: Integer; DeltaY: Integer); overrideArguments
DeltaX | Scroll amount in the horizontal direction. A negative value scrolls to the left, and a positive value scrolls to the right. |
DeltaY | Scroll amount in the vertical direction. A negative value scrolls toward the top, and a positive value scrolls toward the bottom. |
Description
ScrollBy us an overridden method in
TCustomGrid. No
actions are performed in the method when both DeltaX and DeltaY contain 0
(zero).
ScrollBy calls ScrollWindowEx to perform the scrolling operation for the non-fixed client area on the control. It updates the visible grid area in the cached information for the control, and recalculates the scroll bar ranges.
ScrollBy is called from the TrySmoothScrollBy method, and occurs when scroll bar messages or mouse wheel events are handled for the grid control.
See also
An experiment, built from development snapshots. Not the official Free Pascal or Lazarus documentation.