Delphi 2009 之 TStringBuilder 类[4]: Insert 与 Remove

unit Unit1;

interface

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

type
TForm1 = class(TForm)
Button1: TButton;
procedure Button1Click(Sender: TObject);
end;

var
Form1: TForm1;

implementation

{$R *.dfm}

//TStringBuilder 的插入与删除
procedure TForm1.Button1Click(Sender: TObject);
var
sb: TStringBuilder;
begin
sb := TStringBuilder.Create;
sb.Append('CodeGear 2007');

sb.Insert(Length('CodeGear '), 'Delphi ');
ShowMessage(sb.ToString);      {CodeGear Delphi 2007}

sb.Remove(Length('CodeGear Delphi'), Length(' 2007'));
ShowMessage(sb.ToString);      {CodeGear Delphi}

sb.Insert(sb.Length, ' 2009');
ShowMessage(sb.ToString);      {CodeGear Delphi 2009}

sb.Free;
end;

end.