怎样实现动画背景旗帜(4)

  VERIFY(m_bmpBackGround2.GetObject(sizeof(bm2), (LPVOID) &bm2));
  dcMem2.CreateCompatibleDC(NULL);
  dcMem2.SelectObject(&m_bmpBackGround2);
  pDC->StretchBlt(200, 100, 400, 200, &dcMem2, 0, 0, bm2.bmWidth, bm2.bmHeight,
    SRCCOPY);

  ReleaseDC(pDC);
}

void CMdiMainClient::OnRButtonDown(UINT nFlags, CPoint point)
{
  if (StopRotation)
    StopRotation = FALSE;
  else
    StopRotation = TRUE;

  CWnd::OnRButtonDown(nFlags, point);
}

void CMdiMainClient::OnLButtonDown(UINT nFlags, CPoint point)
{
  m_Hide_Logo = TRUE;
  KillTimer(0);

  // Display Application
  ((CBannerApp*)AfxGetApp())->pDocTemplate->OpenDocumentFile(NULL);

  CWnd::OnLButtonDown(nFlags, point);
}

// MdiMainClient.h : header file
//

/////////////////////////////////////////////////////////////////////////////
// CMdiMainClient window

extern BOOL m_Hide_Logo;

class CMdiMainClient: public CWnd
{
    // Construction
  public:
    CMdiMainClient();

    // Attributes
  protected:
    CBitmap m_bmpBackGround2;
    CBitmap m_bmpBackGround;

    int BmpLoaded;
  public:
    BOOL StopRotation;
    CSize m_sizeClient;

    // Overrides
    // ClassWizard generated virtual function overrides
    //{{AFX_VIRTUAL(CMdiMainClient)
    //}}AFX_VIRTUAL

    // Implementation
  public:
    void Display_Blank_Bitmap();
    void DisplayNextLogoFrame();
    virtual ~CMdiMainClient();
    // Generated message map functions
  protected:
    //{{AFX_MSG(CMdiMainClient)
    // NOTE - the ClassWizard will add and remove member functions here.
    afx_msg BOOL OnEraseBkgnd(CDC *pDC);
    afx_msg void OnSize(UINT nType, int cx, int cy);
    afx_msg void OnTimer(UINT nIDEvent);
    afx_msg void OnRButtonDown(UINT nFlags, CPoint point);
    afx_msg void OnLButtonDown(UINT nFlags, CPoint point);
    //}}AFX_MSG
    DECLARE_MESSAGE_MAP()
};