改变 PageSetupDialog 的标题文字

改变 PageSetupDialog 的标题文字(2)   protected PageSetupDialog m_dialog;
  protected IntPtr m_handle = IntPtr.Zero;
  protected bool m_alreadySetup = false;

  private string title;
  
  public PageSetupDialogEx(PageSetupDialog dialog)
  {
   if (dialog == null)
    throw new ArgumentNullException("Must set a valid PageSetupDialog.");

   this.m_dialog = dialog;

   m_cbt = new LocalCbtHook();
   m_cbt.WindowCreated += new CbtEventHandler(WndCreated);
   m_cbt.WindowActivated += new CbtEventHandler(WndActivated);
  }

  public PageSetupDialogEx(PageSetupDialog dialog, string title) : this(dialog)
  {
   this.title = title;
  }
  

  public string Title
  {
   get
   {
    return this.title;
   }
   set
   {
    this.title = value;
   }
  }

  // Show 
  public DialogResult ShowDialog(IWin32Window owner)
  {
   // 调整一下单位，为什么要这么做，你应该知道的吧。
   PageSettings ps = this.m_dialog.PageSettings;
   ps.Margins = PrinterUnitConvert.Convert(ps.Margins,
    PrinterUnit.Display, PrinterUnit.TenthsOfAMillimeter);

   DialogResult dr;
   m_handle = IntPtr.Zero;
   
   m_cbt.Install();
   dr = m_dialog.ShowDialog(owner);

   // 如果结果不是 OK，重新恢复
   if (dr != DialogResult.OK)
   {
    ps.Margins = PrinterUnitConvert.Convert(ps.Margins,
     PrinterUnit.TenthsOfAMillimeter, PrinterUnit.Display);