Как сделать TProgressBar таким же, как на заставке Windows XP
01.01.2007
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.
Взято с Vingrad.ru https://forum.vingrad.ru
{ 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.
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