TCustomDrawGrid.NotifyColRowChange procedure
Performs a notification when a column or row has been changed.
Declaration
procedure NotifyColRowChange(WasInsert: Boolean; IsColumn: Boolean;
FromIndex: Integer; ToIndex: Integer)Arguments
WasInsert | True if an insert triggered the notification. |
IsColumn | True if a column was affected by the change. |
FromIndex | Column or row number affected by the change. |
ToIndex | Column or row number affected by the change. |
Description
NotifyColRowChange is a method used to signal an event handler
when a column or a row in the grid has been changed.
WasInsert determines the event handler signalled in the method.
When WasInsert is set to
True, the
OnColRowInserted event
handler is signalled (when assigned). When set to
False, the
OnColRowDeleted event handler is signalled (when assigned).
FromIndex and
ToIndex indicate the column(s) or row(s)
affected by the change. FromIndex has the column or row number where the
action was performed. When a column or row was inserted, ToIndex has the same
value as FromIndex. For changes to
ColCount or
RowCount, FromIndex and ToIndex contain the column or row count
prior to and following the change.
NotifyColRowChange is called from methods like ColRowInserted,
ColRowDeleted, and SizeChanged.
An experiment, built from development snapshots. Not the official Free Pascal or Lazarus documentation.