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.

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