查看字符串在不同编码(ASCII、Unicode、UTF7、UTF8、Default、BigEndianUnicode)下的 Hex

本例效果图:

---

代码文件:

---

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    Memo1: TMemo;
    Memo2: TMemo;
    Panel1: TPanel;
    Button1: TButton;
    Button2: TButton;
    Button3: TButton;
    Button4: TButton;
    Button5: TButton;
    Button6: TButton;
    procedure Button1Click(Sender: TObject);
    procedure FormCreate(Sender: TObject);
    procedure Button2Click(Sender: TObject);
    procedure Button3Click(Sender: TObject);
    procedure Button4Click(Sender: TObject);
    procedure Button5Click(Sender: TObject);
    procedure Button6Click(Sender: TObject);
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

{从字符串到十六进制的函数}
function StrToHex(str: string; AEncoding: TEncoding): string;
var
  ss: TStringStream;
  i: Integer;
begin
  Result := '';
  ss := TStringStream.Create(str, AEncoding);
  for i := 0 to ss.Size - 1 do
    Result := Result + Format('%.2x ', [ss.Bytes[i]]);
  ss.Free;
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
  Memo2.Text := StrToHex(Memo1.Text, TEncoding.ASCII);
end;

procedure TForm1.Button2Click(Sender: TObject);
begin
  Memo2.Text := StrToHex(Memo1.Text, TEncoding.Unicode);
end;

procedure TForm1.Button3Click(Sender: TObject);
begin
  Memo2.Text := StrToHex(Memo1.Text, TEncoding.UTF7);
end;

procedure TForm1.Button4Click(Sender: TObject);
begin
  Memo2.Text := StrToHex(Memo1.Text, TEncoding.UTF8);
end;

procedure TForm1.Button5Click(Sender: TObject);
begin
  Memo2.Text := StrToHex(Memo1.Text, TEncoding.Default);
end;

procedure TForm1.Button6Click(Sender: TObject);
begin
  Memo2.Text := StrToHex(Memo1.Text, TEncoding.BigEndianUnicode);
end;

procedure TForm1.FormCreate(Sender: TObject);
begin
  Button1.Caption := 'To ASCII';
  Button2.Caption := 'To Unicode';
  Button3.Caption := 'To UTF7';
  Button4.Caption := 'To UTF8';
  Button5.Caption := 'To Default';
  Button6.Caption := 'To BigEndianUnicode';
end;

end.

窗体文件:

---

object Form1: TForm1
  Left = 0
  Top = 0
  Caption = 'Form1'
  ClientHeight = 156
  ClientWidth = 353
  Color = clBtnFace
  Font.Charset = DEFAULT_CHARSET
  Font.Color = clWindowText
  Font.Height = -11
  Font.Name = 'Tahoma'
  Font.Style = []
  OldCreateOrder = False
  OnCreate = FormCreate
  PixelsPerInch = 96
  TextHeight = 13
  object Memo1: TMemo
    Left = 0
    Top = 0
    Width = 145
    Height = 88
    Align = alLeft
    Lines.Strings = (
      'Memo1')
    ScrollBars = ssVertical
    TabOrder = 0
  end
  object Memo2: TMemo
    Left = 157
    Top = 0
    Width = 196
    Height = 88
    Align = alRight
    Lines.Strings = (
      'Memo2')
    ScrollBars = ssVertical
    TabOrder = 1
  end
  object Panel1: TPanel
    Left = 0
    Top = 88
    Width = 353
    Height = 68
    Align = alBottom
    TabOrder = 2
    object Button1: TButton
      Left = 16
      Top = 6
      Width = 73
      Height = 25
      Caption = 'Button1'
      TabOrder = 0
      OnClick = Button1Click
    end
    object Button2: TButton
      Left = 95
      Top = 6
      Width = 74
      Height = 25
      Caption = 'Button2'
      TabOrder = 1
      OnClick = Button2Click
    end
    object Button3: TButton
      Left = 175
      Top = 6
      Width = 82
      Height = 25
      Caption = 'Button3'
      TabOrder = 2
      OnClick = Button3Click
    end
    object Button4: TButton
      Left = 263
      Top = 6
      Width = 74
      Height = 25
      Caption = 'Button4'
      TabOrder = 3
      OnClick = Button4Click
    end
    object Button5: TButton
      Left = 16
      Top = 37
      Width = 96
      Height = 25
      Caption = 'Button5'
      TabOrder = 4
      OnClick = Button5Click
    end
    object Button6: TButton
      Left = 130
      Top = 37
      Width = 207
      Height = 25
      Caption = 'Button6'
      TabOrder = 5
      OnClick = Button6Click
    end
  end
end