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代码文件:
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unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls;
type
TForm1 = class(TForm)
Button1: TButton;
Memo1: TMemo;
procedure Button1Click(Sender: TObject);
procedure FormCreate(Sender: TObject);
end;
var
Form1: TForm1;
implementation
{$R *.dfm}
procedure TForm1.Button1Click(Sender: TObject);
var
stream1,stream2: TStringStream;
b: Byte;
bs: string;
begin
{建立第一个流, 使用默认的双字节编码; 流中的数据是 Memo 中的字符串}
stream1 := TStringStream.Create(Memo1.Text, 54936);
{把第一个流的十六进制编码显示在 Memo 中}
bs := '';
for b in stream1.Bytes do bs := Format(bs + '%2x ', [b]);
Memo1.Lines.Add(bs);
{建立第二个流, 用 UTF8 编码; 还是基于第一个流中的字符串}
stream2 := TStringStream.Create(stream1.DataString, TEncoding.UTF8);
{把第二个流的十六进制编码显示在 Memo 中}
bs := '';
for b in stream2.Bytes do bs := Format(bs + '%2x ', [b]);
Memo1.Lines.Add(bs);
stream1.Free;
stream2.Free;
end;
procedure TForm1.FormCreate(Sender: TObject);
begin
Memo1.Align := alTop;
Memo1.ScrollBars := ssBoth;
Memo1.Text := '万一的 Delphi 博客';
end;
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