TCustomTreeView.Invalidate procedure
Causes the control to be redrawn when a redraw is not already in progress.
Declaration
procedure Invalidate; overrideDescription
Invalidate is an overridden method in
TCustomTreeView,
and causes the control to be redrawn if it is not already re-painting.
Invalidate checks the
States property for the
tvsPainting flag. When present, the
Paint method has
already been called but not yet completed.
No actions are performed in the method when a paint operation is in progress.
Invalidate calls the inherited method prior to exit.
See also
An experiment, built from development snapshots. Not the official Free Pascal or Lazarus documentation.