Mega Code Archive
Create a TEdit with definable text alignment
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Title: create a TEdit with definable text alignment?
{
Dazu m ssen die CreateParams von der Klasse TEdit berschrieben 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.
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