TReplaceDialog/ru

procedure TMyForm.Button1Click(Sender: TObject);
begin
  ReplaceDialog1.Execute();
end;

procedure TMyForm.ReplaceDialog1Replace(Sender: TObject);
var
  k: integer;
begin
  with Sender as TReplaceDialog do begin
    opt := []; 
    if frReplace in Options then
      opt := [ssoReplace]; 
    if frReplaceAll in Options then
      opt := [ssoReplaceAll]; 
    k := TSynEdit1.SearchReplaceEx( FindText, ReplaceText, opt, Position );
    if k>=0 then
      TSynEdit1.SetFocus()
    else
      Beep();
  end;
end;