[4kusNick]

Код:

unit TimeLabel; 

interface 

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

type 
 TTimerType = ( tTime,tDate,tDateTime,tUserDefine); 

  TTimeLabel = class(TLabel) 
  private 
    { Private declarations } 
    MyNotify :TNotifyEvent 
    MyTimer : TTimer; 
    FLableType : TTimerType; 
    FLableFormatType : String; 
    PlaceOnTitleBar : Boolean; 
    procedure SetLableType( value : TTimerType); 
    procedure SetLableFormat( Value : string); 
    procedure SetPlaceOnTitleBar( Value : Boolean); 
  protected 
  { Protected declarations } 
    constructor Create(Owner : TComponent) ; override; 
    destructor Destroy; Override; 
    procedure MouseDown(Button: TMouseButton; Shift: TShiftState; X, Y: Integer);override; 

    Procedure UpdateLable( Sender : TObject); 
  public 
    { Public declarations } 
  published 
    { Published declarations } 
    property LabelType : TTimerType read FLableType write SetLableType ; 
    property LableFormat : String read FLableFormatType write SetLableFormat; 
    property CaptionBar : Boolean read PlaceOnTitleBar Write SetPlaceOnTitleBar default False; 

   Property OnUpdate : TNotifyEvent read MyNotify write MyNotify;  // Declaration Of Event 
  end; 

procedure Register; 

implementation 

constructor TTimeLabel.Create(Owner : TComponent); 
begin 
 inherited create(owner); 
 If csDesigning in ComponentState Then 
   LabelType := tDateTime; 
 UpdateLable(owner); 
 MyTimer := TTimer.Create(Self); 
 MyTimer.OnTimer := UpdateLable; 
 MyTimer.Enabled := True; 
end; 

destructor TTimeLabel.Destroy; 
Begin 
  MyTimer.Destroy ; 
  Inherited Destroy; 
End; 

procedure TTimeLabel.SetLableType(value : TTimerType); 
begin 
  if FLableType <>  Value  then 
    FLableType := Value; 
  UpdateLable(owner); 
end; 

procedure TTimeLabel.UpdateLable(Sender : TObject); 
begin 
   case FLableType of 
    tTime:begin 
       if PlaceOnTitleBar = False then 
         begin 
          caption := TimeToStr(Time); 
          Self.Visible := True; 
         end 
       else 
         begin 
           SetWindowText(self.Parent.Handle,PChar(TimeToStr(Time))); 
           Self.Visible := False ; 
         end; 
      End; 
    tDate:Begin 
       if PlaceOnTitleBar = False then 
         begin 
           caption := DateToStr(Date); 
           Self.Visible := True; 
         end 
       else 
         Begin 
           SetWindowText(self.Parent.Handle,PChar(DateToStr(Date))); 
           Self.Visible := False; 
         end; 
      End; 
    tDateTime:Begin 
       if PlaceOnTitleBar = False then 
         begin 
           caption := DateTimeToStr(Now); 
           Self.Visible := True; 
         end 
       else 
         Begin 
           SetWindowText(self.Parent.Handle,PChar(DateTimeToStr(Now))); 
           Self.Visible := False; 
         end; 
      End; 
    tUserDefine:Begin 
       if PlaceOnTitleBar = False then 
         begin 
           caption := FormatDateTime(FLableFormatType, Now); 
           Self.Visible := True; 
         end 
       else 
         begin 
           SetWindowText(self.Parent.Handle,PChar(FormatDateTime(FLableFormatType, Now))); 
           Self.Visible := False; 
         end; 
      end; 
   if Assigned(MyNotify) then 
        MyNotify(self); 
  end; 
end; 

procedure TTimeLabel.SetLableFormat( value : String); 
begin 
  if FLableFormatType <> value then 
    FLableFormatType := value; 
end; 

procedure TTimeLabel.MouseDown(Button: TMouseButton; Shift: TShiftState; X, Y: Integer); 
begin 
  if (Button = mbRight) and (ssAlt in Shift ) then MessageDlg(' Component TimeLabe Designed By Kiran N.',mtInformation,[mbOk],0); 
  inherited MouseDown(Button,Shift,X,Y); 
end; 

procedure TTimeLabel.SetPlaceOnTitleBar(Value : Boolean); 
begin 
  if PlaceOnTitleBar <> Value then 
    PlaceOnTitleBar := Value; 
  if PlaceOnTitleBar = False then 
end; 

procedure Register; 
begin 
  RegisterComponents('Kiran', [TTimeLabel]); // Registering the Component on to the VCL 
end; 

end. 

Для использования, создай файл текстовый, перекинь вышенаписанное в него, назови файл TimeLabel.pas и добавляй его в uses своей проги...

Еще одна реализация:

Код:

unit TimeLabel;

interface

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

type
  TTimeLabel = class(TLabel)
  private
    FTimer: TTimer;

    procedure TimerTimer(Sender: TObject);
  protected

  public
    property Timer: TTimer read FTimer;

    constructor Create(AOwner: TComponent); override;
    destructor Destroy; override;
  published
    { Published declarations }
  end;

procedure Register;

implementation

procedure Register;
begin
  RegisterComponents('XYZ', [TTimeLabel]);
end;

{ TTimeLabel }

constructor TTimeLabel.Create(AOwner: TComponent);
begin
  inherited;

  FTimer := TTimer.Create(Self);
  FTimer.OnTimer := TimerTimer;
  FTimer.Enabled := False;
end;

destructor TTimeLabel.Destroy;
begin
  FTimer.Free;

  inherited;
end;

procedure TTimeLabel.TimerTimer(Sender: TObject);
begin
  Caption := FormatDateTime('YYYY/MM/DD hh:nn:ss', Now);
end;

end.

И пример использования:

Код:

uses TimeLabel;

procedure TForm1.Button1Click(Sender: TObject);
var myTimeLabel: TTimeLabel;
begin
  myTimeLabel := TTimeLabel.Create(Self);
  myTimeLabel.Parent := Self;
  myTimeLabel.Left := 0;
  myTimeLabel.Top := 0;

  myTimeLabel.Timer.Interval := 1000;
  myTimeLabel.Timer.Enabled := True;
end;