请教edit控件的右对齐问题？

Question

请问edit控件输入的内容怎么才能右对齐？我在线等待！谢谢！

Answer 1

在你的程序中替换掉TEdit，如下：
unit Unit1;interfaceuses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls;type
 TEdit = class(StdCtrls.TEdit)
 private
   FAlignment : TAlignment;
   procedure SetAlignment(Value: TAlignment);
 protected
   procedure CreateParams(var Params: TCreateParams); override;
 public
   property Alignment: TAlignment read FAlignment write SetAlignment;
end;type
  TForm1 = class(TForm)
    Edit1: TEdit;
    Button1: TButton;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;var
  Form1: TForm1;implementation{$R *.dfm}procedure TEdit.CreateParams(var Params: TCreateParams);
const
 Alignments : array[TAlignment] of LongWord= (ES_Left,ES_Right, ES_Center);
begin
 inherited CreateParams(Params);
 Params.Style := Params.Style or Alignments[FAlignment];
end;procedure TEdit.SetAlignment(Value: TAlignment);
begin
 if FAlignment <> Value then
 begin
   FAlignment := Value;
   RecreateWnd;
 end;
end;procedure TForm1.Button1Click(Sender: TObject);
begin
  Edit1.Alignment := taRightJustify;
end;end.

Answer 2

由sysu(死树) 的例子得到启发，写出以下代码：
procedure TForm1.Button1Click(Sender: TObject);
var
  hEdt : Thandle;
begin
  hEdt := CreateWindowEx(WS_EX_CLIENTEDGE,'Edit', 'Edit1',WS_CHILD or ES_RIGHT,100,100,
    100,20,Self.handle,0,hInstance,0);
  ShowWindow(hEdt,sw_normal);
end;

Answer 3

我的组件就OK了
设置Alignment就可以左中右对齐都可以
unit EditEx;// TEditEx --- LYSoft by Liu Yang 2002.12.5
// support Alignment propertyinterfaceuses Messages, Windows, SysUtils, Classes, Controls, Forms, StdCtrls;type
  TEditEx = class(TCustomEdit)
  private
    { Private declarations }
    FAlignment: TAlignment;
  protected
    { Protected declarations }
    procedure CreateParams(var Params: TCreateParams); override;
    procedure Loaded; override;
    procedure SetAlignment(Value: TAlignment);
  public
    { Public declarations }
    constructor Create(AOwner: TComponent); override;
    destructor Destroy; override;
    function GetControlsAlignment: TAlignment; override;
  published
    { Published declarations }
    property Alignment: TAlignment read FAlignment write SetAlignment default taLeftJustify;
    property Align;
    property Anchors;
    property BevelEdges;
    property BevelInner;
    property BevelKind default bkNone;
    property BevelOuter;
    property BiDiMode;
    property BorderStyle;
    property Color;
    property Constraints;
    property Ctl3D;
    property DragCursor;
    property DragKind;
    property DragMode;
    property Enabled;
    property Font;
    property HideSelection;
    property ImeMode;
    property ImeName;
    property MaxLength;
    property OEMConvert;
    property ParentBiDiMode;
    property ParentColor;
    property ParentCtl3D;
    property ParentFont;
    property ParentShowHint;
    property PopupMenu;
    property ReadOnly;
    property ShowHint;
    property TabOrder;
    property TabStop;
    property Text;
    property Visible;
    property OnChange;
    property OnClick;
    property OnContextPopup;
    property OnDblClick;
    property OnDragDrop;
    property OnDragOver;
    property OnEndDock;
    property OnEndDrag;
    property OnEnter;
    property OnExit;
    property OnKeyDown;
    property OnKeyPress;
    property OnKeyUp;
    property OnMouseDown;
    property OnMouseMove;
    property OnMouseUp;
    property OnStartDock;
    property OnStartDrag;
  end;procedure Register;implementationprocedure Register;
begin
  RegisterComponents('Custom', [TEditEx]);
end;constructor TEditEx.Create(AOwner: TComponent);
begin
  inherited Create(AOwner);
  ParentBackground := False;
end;procedure TEditEx.CreateParams(var Params: TCreateParams);
const
  Alignments: array[Boolean, TAlignment] of DWORD =
    ((ES_LEFT, ES_RIGHT, ES_CENTER),(ES_RIGHT, ES_LEFT, ES_CENTER));
begin
  inherited CreateParams(Params);
  with Params do
  begin
    Style := Style or
      Alignments[UseRightToLeftAlignment, FAlignment];
  end;
end;destructor TEditEx.Destroy();
begin
  inherited Destroy();
end;function TEditEx.GetControlsAlignment: TAlignment;
begin
  Result := FAlignment;
end;procedure TEditEx.Loaded;
begin
  inherited Loaded;
  Modified := False;
end;procedure TEditEx.SetAlignment(Value:TAlignment);
begin
  if FAlignment <> Value then
  begin
    FAlignment := Value;
    RecreateWnd;
  end;
end;end.

Answer 4

如果觉得很烦，就用format函数来做吧！