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uses ShellAPI;
procedure TForm1.Button1Click(Sender: TObject);
begin
//ÓÃIE´ò¿ª
  ShellExecute(Handle, 'open', 'IExplore.EXE', 'about:blank', nil, SW_SHOWNORMAL);
//Óûðºü´ò¿ª
  ShellExecute(Handle, 'open', 'firefox.exe', 'about:blank', nil, SW_SHOWNORMAL);
//ÓÃĬÈÏä¯ÀÀÆ÷´ò¿ª
  ShellExecute(Handle, 'open', 'Explorer.exe', 'about:blank', nil, SW_SHOWNORMAL);
end;
//ÁíÒ»ÖÖµ÷ÓÃIE´ò¿ªµÄ·½·¨
uses ComObj;
procedure TForm1.Button1Click(Sender: TObject);
  procedure OpenInIE(aURL: string);
  var
    IE: Variant;
  begin
    IE := CreateOleObject('InternetExplorer.Application');
    IE.Visible := true;
    IE.Navigate(aURL);
  end;
begin
  OpenInIE('www.132435.com');
end;
//µÚ¶þÖÖ·½·¨¿ÉÒÔÓиü¶à¿ØÖÆ
procedure TForm1.Button1Click(Sender: TObject);
  procedure OpenInIE(aURL: string);  //need uses ComObj;
  var
    IE: Variant;
  begin
    IE := CreateOleObject('InternetExplorer.Application');
    IE.Visible := true; //¿É¼û
    IE.left := 0;
    IE.top := 0;
    IE.height := 600; //¸ß¶È
    IE.width := 800; //¿í¶È
    IE.menubar := 0; //È¡Ïû²Ëµ¥À¸
    IE.addressbar := 0; //È¡ÏûµØÖ·À¸
    IE.toolbar := 0; //È¡Ïû¹¤¾ßÀ¸
    IE.statusbar := 0; //È¡Ïû״̬À¸
   //IE.resizable := 0;  //²»ÔÊÐíÓû§¸Ä±ä´°¿Ú´óС
    IE.Navigate(aURL);
  end;
begin
  OpenInIE('www.132435.com/blog');
end;