unit1.pas

Delphi高级界面特效制作百例源代码,这是随书源代码部分,不知可否

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    StatusBar1: TStatusBar;
    MaskEdit1: TMaskEdit;
    Label1: TLabel;
    Button1: TButton;
    Timer1: TTimer;
    procedure StatusBar1DrawPanel(StatusBar: TStatusBar;
      Panel: TStatusPanel; const Rect: TRect);
    procedure Button1Click(Sender: TObject);
    procedure Timer1Timer(Sender: TObject);
    procedure FormClose(Sender: TObject; var Action: TCloseAction);
    procedure FormShow(Sender: TObject);
  private
    { Private declarations }
    //进程条对象
    prog : TProgressbar;
     //记录要插入进程条的坐标范围
    DrawRect : TRect;
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.DFM}

procedure TForm1.StatusBar1DrawPanel(StatusBar: TStatusBar;
  Panel: TStatusPanel; const Rect: TRect);
begin
    //记录要插入进程条的坐标范围
    DrawRect := rect;
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
    with prog do
    begin
        //设定进程条的宽度和高度
        top := DrawRect.top;
        left := DrawRect.left;
        width := DrawRect.right-DrawRect.left;
        height := DrawRect.bottom-DrawRect.top;
        Visible := True;
        Parent := StatusBar1;
        prog.Smooth := True;
    end;

    //设置进程条的值
    prog.Min := 0;
    prog.Max := 100;

    //使进程条可见
    prog.Visible := True;
    prog.Position := 0;

    //设定定时器时间间隔
    Timer1.Interval := StrToInt(Trim(MaskEdit1.Text));

    // 改变宽度
    //StatusBar1.Panels.Items[1].width := 150;
    //StatusBar1.repaint;

    //启动定时器
    Timer1.Enabled := True;
end;

//定时器响应事件
procedure TForm1.Timer1Timer(Sender: TObject);
begin
    //当进程没有完成
    if prog.Position < 100 then
    begin
        //进程条进程运动 
        prog.Position := prog.Position + 1;
        prog.Repaint;
    end
    else
        //定时器定时关闭
        Timer1.Enabled := False;
end;

//工程退出，释放进程条对象
procedure TForm1.FormClose(Sender: TObject; var Action: TCloseAction);
begin
    //释放进程条对象 
    prog.Free;
end;

procedure TForm1.FormShow(Sender: TObject);
begin
    prog := TProgressbar.Create(Form1);
end;

end.