Как сделать ProgressBar таким же, как на заставке Windows XP

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Как сделать ProgressBar таким же, как на заставке Windows XP[править | править код]

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    Button1: TButton;
    ProgressBar1: TProgressBar;
    Button2: TButton;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

const
  PBS_MARQUEE = $08;
  PBM_SETMARQUEE = WM_USER + 10;

implementation

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
var
  FSpeed: Integer;
begin
  FSpeed := 100;
  SetWindowLong(ProgressBar1.Handle, GWL_STYLE,
    GetWindowLong(ProgressBar1.Handle, GWL_STYLE) Or PBS_MARQUEE);
  { Включить }
  SendMessage(ProgressBar1.Handle, PBM_SETMARQUEE, 1, FSpeed);
end;

procedure TForm1.Button2Click(Sender: TObject);
begin
  { Выключить }
  SendMessage(ProgressBar1.Handle, PBM_SETMARQUEE, 0, 0);
end;

end.


Source: Взято с Vingrad.ru http://forum.vingrad.ru
ID: 00526



{ 
  Use this ProgressBar when you do not know the amount of progress toward 
  completion but wish to indicate that progress is being made. 

  This ProgressBar works only on Windows XP and the ComCtl32.dll version 
  6.00 or later is needed. To use the new ComCtrl you have to provide the manifest. 
  In Delphi 7 just drop TXPManifest on the form. For prior versions of Delphi 
  you have to include the XP manifest resource. 
}


unit MarqueeProgressBar;

interface

uses
  SysUtils, Windows, Classes, Controls, ComCtrls, Messages;

type
  TMarqueeProgressBar = class(TProgressBar)
  private
    FActive: Boolean;
    FAnimationSpeed: Integer;
    procedure SetActive(const Value: Boolean);
    procedure SetAnimationSpeed(const Value: Integer);
    procedure UpdateProgressBar;
  protected
    procedure CreateParams(var Params: TCreateParams); override;
  public
    constructor Create(AOwner: TComponent); override;
  published
    property Active: Boolean read FActive write SetActive;
    property AnimationSpeed: Integer read FAnimationSpeed write SetAnimationSpeed;
  end;

const
  PBS_MARQUEE  = $08;
  PBM_SETMARQUEE = WM_USER + 10;

procedure Register;

implementation

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

constructor TMarqueeProgressBar.Create(AOwner: TComponent);
begin
  inherited;
  FAnimationSpeed := 60;
end;

procedure TMarqueeProgressBar.CreateParams(var Params: TCreateParams);
begin
  inherited;
  Params.Style := Params.Style or PBS_MARQUEE;
end;

procedure TMarqueeProgressBar.SetActive(const Value: Boolean);
begin
  FActive := Value;
  UpdateProgressBar;
end;

procedure TMarqueeProgressBar.SetAnimationSpeed(const Value: Integer);
begin
  FAnimationSpeed := Value;
  UpdateProgressBar;
end;

procedure TMarqueeProgressBar.UpdateProgressBar;
begin
  if FActive then
    SendMessage(Self.Handle, PBM_SETMARQUEE, 1, FAnimationSpeed)
  else
    SendMessage(Self.Handle, PBM_SETMARQUEE, 0, 0);
end;

end.


Language: en
Source: Взято с сайта: http://www.swissdelphicenter.ch
ID: 00959