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 程式師世界 >> 編程語言 >> 更多編程語言 >> Delphi >> Delphi 2009 中 string 與 Char 的改變

Delphi 2009 中 string 與 Char 的改變

編輯:Delphi

在 Delphi 2009 中:

  string = UnicodeString; (同樣: PString = PUnicodeString;)

  Char = WideChar; (同樣: PChar = PWideChar;)

  本例效果圖:

Delphi 2009 中 string 與 Char 的改變

  代碼文件:unit Unit1;
interface
uses
 Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
 Dialogs, StdCtrls;
type
 TForm1 = class(TForm)
  Memo1: TMemo;
  Edit1: TEdit;
  Button1: TButton;
  Button2: TButton;
  Button3: TButton;
  Button4: TButton;
  Button5: TButton;
  Button6: TButton;
  Button7: TButton;
  procedure FormCreate(Sender: TObject);
  procedure Button1Click(Sender: TObject);
  procedure Button2Click(Sender: TObject);
  procedure Button3Click(Sender: TObject);
  procedure Button4Click(Sender: TObject);
  procedure Button5Click(Sender: TObject);
  procedure Button6Click(Sender: TObject);
  procedure Button7Click(Sender: TObject);
 end;
var
 Form1: TForm1;
implementation
{$R *.dfm}
procedure TForm1.FormCreate(Sender: TObject);
begin
 Memo1.Clear;
 Edit1.Alignment := taCenter;
 Edit1.Text := '''萬一的 Delphi 博客''';
 Button1.Caption := 'string';
 Button2.Caption := 'AnsiString';
 Button3.Caption := 'WideString';
 Button4.Caption := 'Char';
 Button5.Caption := 'AnsiChar';
 Button6.Caption := 'WideChar';
 Button7.Caption := '清' + #10#10 + '空';
 Button7.WordWrap := True;
end;
procedure TForm1.Button1Click(Sender: TObject);
var
 str: string;
 i: Integer;
begin
 str := Edit1.Text;
 Memo1.Clear;
 for i := 1 to Length(str) do Memo1.Lines.Add(str[i]);
end;
procedure TForm1.Button2Click(Sender: TObject);
var
 str: AnsiString;
 i: Integer;
begin
 str := Edit1.Text;
 Memo1.Clear;
 for i := 1 to Length(str) do Memo1.Lines.Add(str[i]);
end;
procedure TForm1.Button3Click(Sender: TObject);
var
 str: WideString;
 i: Integer;
begin
 str := Edit1.Text;
 Memo1.Clear;
 for i := 1 to Length(str) do Memo1.Lines.Add(str[i]);
end;
procedure TForm1.Button4Click(Sender: TObject);
var
 c: Char;
begin
 Memo1.Clear;
 for c in Edit1.Text do Memo1.Lines.Add(c);
end;
procedure TForm1.Button5Click(Sender: TObject);
var
 c: AnsiChar;
begin
 Memo1.Clear;
 for c in AnsiString(Edit1.Text) do Memo1.Lines.Add(c);
end;
procedure TForm1.Button6Click(Sender: TObject);
var
 c: WideChar;
begin
 Memo1.Clear;
 for c in Edit1.Text do Memo1.Lines.Add(c);
end;
procedure TForm1.Button7Click(Sender: TObject);
begin
 Memo1.Clear;
end;
end.
窗體文件:object Form1: TForm1
 Left = 0
 Top = 0
 Caption = 'Form1'
 ClIEntHeight = 223
 ClIEntWidth = 256
 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 = 73
  Height = 223
  Align = alLeft
  Font.Charset = DEFAULT_CHARSET
  Font.Color = clWindowText
  Font.Height = -11
  Font.Name = 'Tahoma'
  Font.Style = []
  Lines.Strings = (
   'Memo1')
  ParentFont = False
  TabOrder = 0
  ExplicitHeight = 174
 end
 object Edit1: TEdit
  Left = 79
  Top = 11
  Width = 170
  Height = 21
  TabOrder = 1
  Text = 'Edit1'
 end
 object Button1: TButton
  Left = 79
  Top = 38
  Width = 121
  Height = 25
  Caption = 'Button1'
  TabOrder = 2
  OnClick = Button1Click
 end
 object Button2: TButton
  Left = 79
  Top = 69
  Width = 121
  Height = 25
  Caption = 'Button2'
  TabOrder = 3
  OnClick = Button2Click
 end
 object Button3: TButton
  Left = 79
  Top = 100
  Width = 121
  Height = 25
  Caption = 'Button3'
  TabOrder = 4
  OnClick = Button3Click
 end
 object Button4: TButton
  Left = 79
  Top = 131
  Width = 121
  Height = 25
  Caption = 'Button4'
  TabOrder = 5
  OnClick = Button4Click
 end
 object Button5: TButton
  Left = 79
  Top = 162
  Width = 121
  Height = 25
  Caption = 'Button5'
  TabOrder = 6
  OnClick = Button5Click
 end
 object Button6: TButton
  Left = 79
  Top = 191
  Width = 121
  Height = 25
  Caption = 'Button6'
  TabOrder = 7
  OnClick = Button6Click
 end
 object Button7: TButton
  Left = 201
  Top = 38
  Width = 48
  Height = 178
  Caption = 'Button7'
  TabOrder = 8
  OnClick = Button7Click
 end
end


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