Not call OnCtlColor

hello,
I override the function OnCtlColor , but it not work at all.
I set break point in CAboutDlg::OnCtlColor, I never seen the program stopped
into debug mode in it.

who can tell me why it not work?

code is listed as the following:
//=================================
class CAboutDlg : public CDialog
{
public:
 CAboutDlg();

// Dialog Data
 enum { IDD = IDD_ABOUTBOX };

protected:
 virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV support

// Implementation
protected:
 CTabCtrl m_tab1;
 DECLARE_MESSAGE_MAP()
public:

 afx_msg HBRUSH OnCtlColor (CDC * pDCM , CWnd * pWnd , UINT nCtlColor);
 BOOL OnInitDialog();

};

CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{

}

HBRUSH CAboutDlg::OnCtlColor (CDC * pDCM , CWnd * pWnd , UINT nCtlColor)
{
 HBRUSH rtn=CDialog::OnCtlColor(pDCM,pWnd,nCtlColor);

 if((pWnd->GetSafeHwnd()!= m_tab1.GetSafeHwnd()) &&
(nCtlColor==CTLCOLOR_STATIC))
 {
  COLORREF color=m_tab1.GetDC()->GetBkColor();
  pWnd->GetDC()->SetBkColor(color);
 }
 return rtn;
}
void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
 CDialog::DoDataExchange(pDX);
 DDX_Control(pDX, IDC_TAB1, m_tab1);
}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
 ON_NOTIFY(TCN_SELCHANGE, IDC_TAB1, &CAboutDlg::OnTcnSelchangeTab1)
 ON_BN_CLICKED(IDOK, &CAboutDlg::OnBnClickedOk)
 ON_BN_CLICKED(IDC_BUTTON1, &CAboutDlg::OnBnClickedButton1)
END_MESSAGE_MAP()