TRVAControlPanel.OnMarginsChanged

Occurs after some action changes TCustomRichViewEdit control's margins (LeftMargin, TopMargin, RightMargin, and BottomMargin properties).

property OnMarginsChanged: TRVAEditEvent;

Margins can be changed by TrvActionOpen and TrvActionBackground actions.

If you use TRVRuler, you must update it in this event:

procedure TForm1.RVAControlPanel1MarginsChanged(Sender: TrvAction;

  Edit: TCustomRichViewEdit);

begin

  RVRuler1.UpdateRulerMargins;

end;