关于线程和一小问题.

unit UnitXZLYDSJ;



interface



uses

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

  Dialogs, Grids, DBGrids, StdCtrls, ComCtrls, ExtCtrls, DB, ADODB;



type

  TFrmXZLYDSJ = class(TForm)

    Panel4: TPanel;

    LblMessage: TLabel;

    BtnRetry: TButton;

    Panel3: TPanel;

    ProgressBar1: TProgressBar;

    GroupBox9: TGroupBox;

    BtnStart: TButton;

    BtnClose: TButton;

    PanelFCSJ: TPanel;

    GroupBox5: TGroupBox;

    DBGrid03: TDBGrid;

    LabelInfo: TLabel;

    ADOConnection1: TADOConnection;

    DataSource1: TDataSource;

    ADOQuery1: TADOQuery;

    ADOQuery2: TADOQuery;         // FrmMain.ADOConnection1

    procedure BtnRetryClick(Sender: TObject);

    procedure FormShow(Sender: TObject);



    procedure   ShowData;

    procedure BtnStartClick(Sender: TObject);

    procedure BtnCloseClick(Sender: TObject);

  private

    { Private declarations }

  public

    { Public declarations }

  end;



var

  FrmXZLYDSJ: TFrmXZLYDSJ;

  threadid:dword;

  hthread:thandle;

  do1:boolean;

  procedure down1;



implementation



uses UnitMain; 

{$R *.dfm}



procedure down1;

begin

  ProgressBar1.Max:=ADOQuery1.RecordCount;   // 54行

  ProgressBar1.Step:=1;

  ADOQuery1.First ;

  while not ADOQuery1.Eof do

  begin

     with ADOQuery2 do

     begin

       close;

       sql.Clear ;

       sql.add('select TOP 1 * from 运单表 where 运单号 = '''+ADOQuery1.FieldByName('运单号').AsString+'''');

       open;

       if not eof then

       begin

         ADOQuery2.Edit ;

         ADOQuery2.FieldByName('持票人').AsString:=ADOQuery1.FieldByName('持票人').AsString;

         ADOQuery2.FieldByName('领票日期').AsString:=ADOQuery1.FieldByName('领票日期').AsString;

         ADOQuery2.FieldByName('出车编号').AsString:=ADOQuery1.FieldByName('出车编号').AsString;

         ADOQuery2.Post ;

       end;

     end;

     ADOQuery1.Edit;

     ADOQuery1.FieldByName('已下载').AsBoolean:=true;

     ADOQuery1.Post;

     ADOQuery1.Next;

     ProgressBar1.StepIt;

  end;

   LabelInfo.Visible :=true;

   showdata;

   do1:=true;

end;



procedure TFrmXZLYDSJ.BtnRetryClick(Sender: TObject);

begin

  try

    ADOConnection1.Connected:=False;

    ADOConnection1.ConnectionString:='Provider=SQLOLEDB.1;Password=88888888;Persist Security Info=True;User ID=jld56;Initial Catalog=jld56;Data Source=255.255.255.255';

    ADOConnection1.LoginPrompt:=false;

    ADOConnection1.Connected:=true;

    LblMessage.Caption:='数据库连接成功!';

    BtnReTry.Enabled:=False;

  except

      LblMessage.Caption:='数据库连接失败,请确认网络连接无误后,按“重新连接”按钮!';

      BtnStart.Enabled:=False;

      BtnReTry.Enabled:=True;

  end;

  ShowData;

end;



procedure TFrmXZLYDSJ.FormShow(Sender: TObject);

begin

  BtnRetry.Click;

  do1:=true;

end;



procedure TFrmXZLYDSJ.ShowData;

begin

   LabelInfo.Visible :=false;

   with  ADOQuery1 do

   begin

     close;

     sql.Clear ;

     sql.Add(' select * from 领运单数据表 where 已下载 = 0 ');

     open;

     if RecordCount<=0 then

       BtnStart.Enabled :=false

     else

       BtnStart.Enabled :=true;     

   end;

end;



procedure TFrmXZLYDSJ.BtnStartClick(Sender: TObject);

begin

  if MessageDlg('您确定要下载  领运单 数据吗？',mtConfirmation,[mbYes,mbNo],0)=mrNo then

    exit;

  if do1=true then

    begin

    hthread:=createthread(nil,0,@down1,nil,0,threadid);

    do1:=false;

    end;

end;



procedure TFrmXZLYDSJ.BtnCloseClick(Sender: TObject);

begin

  if hthread>0 then

    terminatethread(hthread,2);

  close;



end;



end.

[Error] UnitXZLYDSJ.pas(54): Undeclared identifier: 'ProgressBar1'
[Error] UnitXZLYDSJ.pas(54): Missing operator or semicolon
[Error] UnitXZLYDSJ.pas(54): Missing operator or semicolon
[Error] UnitXZLYDSJ.pas(55): Missing operator or semicolon
[Error] UnitXZLYDSJ.pas(56): Missing operator or semicolon
[Error] UnitXZLYDSJ.pas(57): 'DO' expected but identifier 'Eof' found
[Error] UnitXZLYDSJ.pas(59): Undeclared identifier: 'ADOQuery2'
[Error] UnitXZLYDSJ.pas(61): '(' expected but ';' found
[Error] UnitXZLYDSJ.pas(62): Undeclared identifier: 'sql'
[Error] UnitXZLYDSJ.pas(63): Missing operator or semicolon
[Error] UnitXZLYDSJ.pas(63): Missing operator or semicolon
[Error] UnitXZLYDSJ.pas(63): Missing operator or semicolon
[Error] UnitXZLYDSJ.pas(63): 'END' expected but ')' found
[Error] UnitXZLYDSJ.pas(65): Missing operator or semicolon
[Error] UnitXZLYDSJ.pas(67): Missing operator or semicolon
[Error] UnitXZLYDSJ.pas(68): Missing operator or semicolon
[Error] UnitXZLYDSJ.pas(68): Missing operator or semicolon
[Error] UnitXZLYDSJ.pas(68): Missing operator or semicolon
[Error] UnitXZLYDSJ.pas(68): Missing operator or semicolon
[Error] UnitXZLYDSJ.pas(69): Missing operator or semicolon
[Error] UnitXZLYDSJ.pas(69): Missing operator or semicolon
[Error] UnitXZLYDSJ.pas(69): Missing operator or semicolon
[Error] UnitXZLYDSJ.pas(69): Missing operator or semicolon
[Error] UnitXZLYDSJ.pas(70): Missing operator or semicolon
[Error] UnitXZLYDSJ.pas(70): Missing operator or semicolon
[Error] UnitXZLYDSJ.pas(70): Missing operator or semicolon
[Error] UnitXZLYDSJ.pas(70): Missing operator or semicolon
[Error] UnitXZLYDSJ.pas(71): Missing operator or semicolon
[Error] UnitXZLYDSJ.pas(75): Missing operator or semicolon
[Error] UnitXZLYDSJ.pas(76): Missing operator or semicolon
[Error] UnitXZLYDSJ.pas(76): Missing operator or semicolon
[Error] UnitXZLYDSJ.pas(77): Missing operator or semicolon
[Error] UnitXZLYDSJ.pas(78): Missing operator or semicolon
[Error] UnitXZLYDSJ.pas(79): Missing operator or semicolon
[Error] UnitXZLYDSJ.pas(81): Declaration expected but identifier 'LabelInfo' found
[Error] UnitXZLYDSJ.pas(84): '.' expected but ';' found
[Fatal Error] JLDZB.dpr(114): Could not compile used unit '..\下载领运单数据\UnitXZLYDSJ.pas'