TColorListBox.TopIndex property
Index of the first visible (or top-most) item.
Declaration
property TopIndex:;Description
TopIndex is an
Integer property which contains the
ordinal position in
Items for the first visible list item in the
scrollable control. The default value for the property is
0 (the first
value in Items).
The property value is retrieved from the widgetset class when a handle has been allocated for the control. Setting a new value for the property causes the widgetset class to be notified of the value change when a handle has been allocated for the control.
The value in TopIndex is updated in the MakeCurrentVisible method
where the current selection in ItemIndex is assigned to the
property.
This description is the one of StdCtrls.TCustomListBox.TopIndex.
See also
- Items
- ItemHeight
- MakeCurrentVisible
An experiment, built from development snapshots. Not the official Free Pascal or Lazarus documentation.