Programalama > DELPHI

uses kısmına typinfo unitini ekleyin. 

procedure TForm1.SetReadOnly( Value : boolean ) ;
var 
  PropInfo : PPropInfo ;
  Component : TComponent ;
  i : integer ;
begin
  for i := 0 to ComponentCount - 1 do begin
    Component := Components[ i ] ;
      if Component is TControl then begin
        PropInfo := GetPropInfo( Component.ClassInfo, 'ReadOnly' ) ;
          if Assigned( PropInfo ) and 
             ( PropInfo^.PropType^.Kind = tkEnumeration ) then
               SetOrdProp( Component, PropInfo, integer( Value ) ) ;
      end ;
  end ;
end ; 

procedure TForm1.Button1Click(Sender: TObject);
begin
  SetReadOnly( true ) ;
end;