Mega Code Archive
How to create a TEdit with definable text alignment
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Title: How to create a TEdit with definable text alignment
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.
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