如何用弹出窗口显示进度

准备工作: 在空白窗体上添加 Button 和 Timer, 并分别激活它们的默认事件.

---

unit Unit1;



interface



uses

  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,

  Dialogs, ExtCtrls, StdCtrls;



type

  TForm1 = class(TForm)

    Button1: TButton;

    Timer1: TTimer;

    procedure Button1Click(Sender: TObject);

    procedure Timer1Timer(Sender: TObject);

  end;



var

  Form1: TForm1;



implementation



{$R *.dfm}



uses Gauges;



var Gauge1: TGauge;



procedure TForm1.Button1Click(Sender: TObject);

var

  frm: TForm;

begin

  frm := TForm.Create(nil);

  frm.BorderStyle := bsSizeToolWin;

  frm.Width := 300;

  frm.Height := 80;

  frm.Position := poDesktopCenter;

    Gauge1 := TGauge.Create(frm);

    Gauge1.MinValue := 0;

    Gauge1.MaxValue := 100;

    Gauge1.Width := frm.ClientWidth - 40;

    Gauge1.Height := 20;

    Gauge1.Left := 20;

    Gauge1.Top := (frm.ClientHeight - Gauge1.Height) div 2;

    Gauge1.Parent := frm;

  Timer1.Interval := 100;

  Timer1.Enabled := True;

  frm.ShowModal;

  frm.Free;

  Timer1.Enabled := False;

end;



procedure TForm1.Timer1Timer(Sender: TObject);

begin

  if Assigned(Gauge1) then

  begin

    Gauge1.Progress := Gauge1.Progress + 1;

    if Gauge1.Progress = Gauge1.MaxValue then TForm(Gauge1.Parent).ModalResult := 1;

  end;

end;



end.