自己编写的多个文件复制程序，带进度条和状态显示

图例：

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程序及源代码下载地址： http://115.com/file/bhioozql

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unit uForm_Main;

interface

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

type
  TForm_Main = class(TForm)
    Label1: TLabel;
    Label2: TLabel;
    edt_Des: TEdit;       //目标目录文本框
    LB_Files: TListBox;   //文件清单
    btn_OK: TButton;
    btn_Exit: TButton;
    btn_Des: TButton;     //选择目录按钮
    btn_Files: TButton;   //选择文件按钮
    OpenDialog1: TOpenDialog;   //用来选择文件用的
    lb_ACount: TLabel;          //状态显示，显示文件数目
    ProgressBar1: TProgressBar; //进度条
    lb_: TLabel;                //状态显示中的'/'
    lb_Count: TLabel;           //状态显示，显示已经复制了几个文件
    procedure btn_FilesClick(Sender: TObject);
    procedure btn_ExitClick(Sender: TObject);
    procedure btn_DesClick(Sender: TObject);
    procedure btn_OKClick(Sender: TObject);
    procedure FormCreate(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form_Main: TForm_Main;
  ds: string;   //用来存放目标目录

implementation

Uses FileCtrl;    //需要用SelectDirectory函数
{$R *.dfm}

procedure TForm_Main.btn_DesClick(Sender: TObject);
begin
  selectdirectory('选择你所要粘贴的位置：', '', ds);    //弹出目录选择框，并将路径赋值给ds
  edt_des.Text:= ds;
end;

procedure TForm_Main.btn_ExitClick(Sender: TObject);
begin
  Close;
end;

procedure TForm_Main.btn_FilesClick(Sender: TObject);
var
  i: integer;
begin
  if OpenDialog1.Execute then
    begin
      LB_Files.Clear;
      for i := OpenDialog1.Files.Count - 1 downto 0 do
        begin
          Application.ProcessMessages;    //为了避免假死，给程序接收其他消息和处理其他消息的时间
          LB_Files.Items.Add(OpenDialog1.Files[i]);   //循环向ListBox添加item
         // ShowMessage(ExtractFileName(OpenDialog1.Files[i]));
        end;
    end;
    lb_ACount.Caption:= inttostr(OpenDialog1.Files.Count);    //将文件总数显示在标签上
end;

procedure TForm_Main.btn_OKClick(Sender: TObject);
var
  i: integer;
  //hthread:thandle;
begin
  ProgressBar1.Max:= OpenDialog1.Files.Count;   //进度条最大值就是待复制文件的数量
  ProgressBar1.Min:= 0;                         //最小值及起始值当然为0
  ProgressBar1.Position:= 0;
  ds:= edt_Des.Text;
  if not directoryExists(ds)then                //如果目录不存在，提示错误
    MessageBox(handle, '请正确输入目的文件夹！ ', '错误', MB_OK+MB_ICONERROR)
  else if OpenDialog1.Files.Count > 0 then
    begin
      for i := 0 to OpenDialog1.Files.Count - 1 do
        begin
          Application.ProcessMessages;    //为了避免假死，给程序接收其他消息和处理其他消息的时间
          CopyFile(PWideChar(OpenDialog1.Files[i]),
                    PWideChar(ds + '\' + ExtractFileName(OpenDialog1.Files[i])),
                    True);    //复制，ExtractFileName可提取详细路径中的文件名
          ProgressBar1.Position:= i + 1;    //每复制一个，进度条和状态显示标签走一步
          lb_Count.Caption:= inttostr(i + 1);
        end;
        MessageBox(handle,'文件复制完毕！', '提示', MB_OK+MB_ICONINFORMATION);
    end
  else
    MessageBox(handle, '请选择好您要复制的文件后，再试！', '错误', MB_OK+MB_ICONERROR);
end;

procedure TForm_Main.FormCreate(Sender: TObject);
begin
  lb_Count.Caption:= '0';
  lb_ACount.Caption:= '0';
end;

end.