<br>unit&nbsp;Unit1;<br /><br />interface<br /><br />uses<br /><br />Windows,&nbsp;Messages,&nbsp;S


unit Unit1;

interface

uses

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

Dialogs, StdCtrls;

type

TForm1 = class(TForm)

Memo1: TMemo;

Memo2: TMemo; {需要添加两个 Memo 用于显示}

Button1: TButton;

procedure Button1Click(Sender: TObject);

procedure FormCreate(Sender: TObject);

end;

var

Form1: TForm1;

implementation

{$R *.dfm}

//先制造一个测试文件

procedure TForm1.FormCreate(Sender: TObject);

var

strList: TStringList;

begin

strList := TStringList.Create;

strList.Add('ABCDEFGHIJKLMNOPQRSTUVWXYZ');

strList.SaveToFile('c:\temp\test.txt');

strList.Free;

end;

procedure TForm1.Button1Click(Sender: TObject);

var

ms: TMemoryStream;

c: Char;

s1,s2: string;

begin

ms := TMemoryStream.Create;

ms.LoadFromFile('c:\temp\test.txt'); {读入内存流}

s1 := '';

s2 := '';

ms.Position := 0; {指针到开始}

while ms.Position < ms.Size do {循环读出}

begin

ms.Read(c,1); {每读出一个字节, 指针会自动移到新的位置}

s1 := s1 + c + ' '; {用文本记录}

s2 := s2 + IntToHex(Byte(c),2) + ' '; {用两位数的十六进制记录}

end;

Memo1.Lines.Text := s1;

Memo2.Lines.Text := s2;

{Memo1 会显示: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z }

{Memo2 会显示: 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F 50 51 52 53 54 55 56 57 58 59 5A 0D 0A}

ms.Free;

end;

end.

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