Компонент TEdit с возможностью задать выравнивание текста

Оформил: DeeCo

{ 
  Dazu mьssen die CreateParams von der Klasse TEdit ьberschrieben werden. 
  Folgende Unit kann als Komponente installiert werden. 

  All you have to do is to verride the CreateParams of the class TEdit. 
  Install the following unit as a component. 
}

 unit AlignEdit;

 interface

 uses
   Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
   StdCtrls;

 type

   TAlign = (eaLeft, eaCenter, eaRight);

   TAlignEdit = class(TEdit)
   private
     { Private-Deklarationen }
     FAlign: TAlign;
     procedure SetAlign(const Value: TAlign);
   protected
     { Protected-Deklarationen }
     procedure CreateParams(var Params: TCreateParams); override;
   public
     { Public-Deklarationen }
     constructor Create(AOwner: TComponent); override;
   published
     { Published-Deklarationen }
     property Alignment: TAlign read FAlign write SetAlign default eaLeft;
   end;

 procedure Register;

 implementation

 constructor TAlignEdit.Create(Aowner: TComponent);
 begin
   inherited Create(AOwner);
   FAlign := eaLeft;
 end;

 procedure TAlignEdit.SetAlign(const Value: TAlign);
 begin
   if FAlign <> Value then
   begin
     FAlign := Value;
     RecreateWnd;
   end;
 end;

 procedure TAlignEdit.CreateParams(var Params: TCreateParams);
 begin
   inherited;
   case FAlign of
     eaLeft: Params.Style   := Params.Style or ES_LEFT;
     eaCenter: Params.Style := Params.Style or ES_CENTER;
     eaRight: Params.Style  := Params.Style or ES_RIGHT;
   end;
 end;

 procedure Register;
 begin
   RegisterComponents('SwissDelphiCenter', [TAlignEdit]);
 end;

 end.