Why my component does not receive windows messages.

Hi,

     I created one customized CStatic class, and add some message
handlers, listed part code below:
class CBitmapMisc : public CStatic
{
    DECLARE_DYNAMIC(CBitmapMisc)

public:
    CBitmapMisc();
    virtual ~CBitmapMisc();

.... ...
protected:
    DECLARE_MESSAGE_MAP()
public:
    afx_msg void OnPaint();
    afx_msg BOOL OnEraseBkgnd(CDC* pDC);
    afx_msg void OnLButtonDown(UINT nFlags, CPoint point);
    afx_msg void OnMouseMove(UINT nFlags, CPoint point);
    afx_msg void OnLButtonUp(UINT nFlags, CPoint point);
    afx_msg void OnKillFocus(CWnd* pNewWnd);
    afx_msg void OnSetFocus(CWnd* pOldWnd);
    afx_msg void OnDestroy();
};

When I am using this class in application, these windows messages never
pass to this component.

class CTestBitmapDlg : public CDialog
{
// Construction
public:
    CTestBitmapDlg(CWnd* pParent = NULL); // standard constructor

// Dialog Data
    enum { IDD = IDD_TESTBITMAP_DIALOG };
    CBitmapMisc m_vbitmap;

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

// Implementation
protected:
    HICON m_hIcon;

    // Generated message map functions
    virtual BOOL OnInitDialog();
    afx_msg void OnPaint();
    afx_msg HCURSOR OnQueryDragIcon();
    DECLARE_MESSAGE_MAP()
};

what did i do wrong? I using vstudio 2005.