代码错误求解

[tologo]

我原来程序已经运行成功了，我重装系统，delphi重装的以后这断代码提示错误，我不记得是不是少装了什么，就是打开文件的地方提示错误，求大神解一下，小弟刚学，代码如下；
unit Unit1;

interface

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

type
TForm1 = class(TForm)
Button1: TButton;
Button2: TButton;
Button3: TButton;
Button4: TButton;
procedure FormCreate(Sender: TObject);
procedure Button4Click(Sender: TObject);
procedure Button1Click(Sender: TObject);
procedure Button2Click(Sender: TObject);
procedure Button3Click(Sender: TObject);
procedure FormDestroy(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;

var
Form1: TForm1;

implementation

{$R *.dfm}
uses Bass;
var
hs : HSTREAM;
time : Double;
procedure TForm1.Button1Click(Sender: TObject);
begin
BASS_ChannelPlay(hs, False);
end;

procedure TForm1.Button2Click(Sender: TObject);
begin
BASS_ChannelStop(hs);
end;

procedure TForm1.Button3Click(Sender: TObject);
begin
BASS_ChannelPause(hs);
end;

procedure TForm1.Button4Click(Sender: TObject);
var
Mp3Path : AnsiString;
begin
OpenDialog1.Filter := 'Mp3 文件(*.mp3)|*.mp3|Wav 文件(*.wav)|*wav'; //OpenDialog1.Filter提示有错吴
if OpenDialog1.Execute then
Mp3Path := AnsiString(OpenDialog1.FileName); //括号里面提示错误

BASS_StreamFree(hs);

hs := BASS_StreamCreateFile(False, PAnsiChar(Mp3Path), 0, 0, 0);

if hs < BASS_ERROR_ENDED then
Text := '打开失败'
else
Text := string(Mp3Path);
end;

procedure TForm1.FormCreate(Sender: TObject);
begin
if HiWord(BASS_GetVersion) <> BASSVERSION then
MessageBox(0, '"Bass.dll" 文件版本不合适! ', nil, MB_ICONERROR);
if not BASS_Init(-1, 44100, 0, 0, nil) then
ShowMessage('初始化错误');
end;


procedure TForm1.FormDestroy(Sender: TObject);
begin
BASS_Free;
end;

end.

[fang]

这些BASS_开头的函数在哪定义的。没看到有定义啊。

[simonhehe]

窗体上放一个TOpenDialog控件, 命名为OpenDialog1

[xiaojun5556]

把错误发上来啊

[tologo]

[DCC Error] Unit1.pas(57): E2003 Undeclared identifier: 'OpenDialog1' [DCC Error] Unit1.pas(57): E2066 Missing operator or semicolon [DCC Error] Unit1.pas(58): E2029 'THEN' expected but identifier 'Execute' found [DCC Fatal Error] Project1.dpr(5): F2063 Could not compile used unit 'Unit1.pas'

[tologo]

我这个代码原来是可以运行的，就是重装了软件以后就运行不了了

[gxgyj]

2楼已经说了，OpenDialog控件没有

[hsfzxjy]

同意#2，编译器说少啥你就加啥呗