void CAboutDlg::OnClose()
  

  {
  

  AnimateWindow(GetSafeHwnd(), 500, AW_BLEND | AW_HIDE);    //淡出0.5秒
  

  CDialog::OnClose();
  

  }
  

  int CAboutDlg::OnCreate(LPCREATESTRUCT lpCreateStruct)
  

  {
  

  if (CDialog::OnCreate(lpCreateStruct) == -1)
  

  return -1;
  

  CenterWindow();                    //居中
  

  ::AnimateWindow(GetSafeHwnd(), 500, AW_BLEND);    //淡入0.5秒
  

  return 0;
  

  }
 

  void AlphaDisplay(CDC &pDC;, CClientDC &dc;, BLENDFUNCTION& rBlendProps, int width, int heigh, byte nLevel)
  

  {
  

  //nLevel是透明度，0表示不显示，255则完全显示
  

  rBlendProps.SourceConstantAlpha = nLevel;
  

  AlphaBlend( dc.m_hDC, 0, 0, width, heigh, pDC.m_hDC, 0, 0,
  

  width, heigh, rBlendProps );
  

  }
  

  

  UINT tdDisplay(LPVOID lpParam)
  

  {
  

  CAlphaCtrl* AlphaCtrl = (CAlphaCtrl*)lpParam;        CClientDC dc(AlphaCtrl);
  

  CDC pDC;
  

  pDC.CreateCompatibleDC(&dc;);
  

  pDC.SelectObject(&AlphaCtrl-;>Bmp);        BLENDFUNCTION rBlendProps;
  

  rBlendProps.BlendOp = AC_SRC_OVER;
  

  rBlendProps.BlendFlags = 0;
  

  rBlendProps.AlphaFormat = 0;     BITMAP bmInfo;
  

  ::GetObject( AlphaCtrl->Bmp.m_hObject, sizeof(BITMAP), &bmInfo; );
  

  INT nWidth, nHeigh;
  

  nWidth = bmInfo.bmWidth;
  

  nHeigh = bmInfo.bmHeight;AlphaCtrl->SetWindowPos(NULL, 0, 0, nWidth, nHeigh, SWP_NOMOVE);
  

  int i = 0;
  

  while(i <= 255)
  

  {
  

  AlphaCtrl->AlphaDisplay(pDC, dc, rBlendProps, nWidth, nHeigh, i);
  

  i += 5;
  

  Sleep(AlphaCtrl->nTimer);
  

  }
  

  AlphaCtrl->bCanPaint = 1; //Make OnPaint Word
  

  AfxEndThread(0);
  

  return 0;
  

  }