Why my TreeView cannot show icon

[joshua0137]

i create a treeview in a wnd derived from CWindowImpl ( i use atl), and i create a imglistctrl for the treeview, everything seems ok of the imagelist, and i assign a image index for every node of the trewview, but no icon shows, and a small empty rect keeps at the left of every node's, anyone can help me?

class CJMainForm : public CWindowImpl
{
public:
DECLARE_WND_CLASS("JMainFrameClass")

CJMainForm(void);
~CJMainForm(void);
BOOL ShowForm(BOOL bShow = TRUE);

BEGIN\_MSG\_MAP( CJMainForm )
	MESSAGE\_HANDLER( WM\_PAINT, OnPaint)
	MESSAGE\_HANDLER(WM\_LBUTTONDOWN,	OnLButtonDown)
	MESSAGE\_HANDLER(WM\_MOUSEMOVE, OnMouseMove)
	MESSAGE\_HANDLER(WM\_ERASEBKGND, OnEraseBkgnd)
	MESSAGE\_HANDLER(WM\_QUERYENDSESSION, OnQueryEndSession)
END\_MSG\_MAP()

public:
CXAnalogClock m_wndClock;
CCalenderWnd m_wndCalender;
CWindow m_wndPrjTree;
HBRUSH m_brBackGround;
SIZE m_szbrBackGround;

protected:
LRESULT OnPaint( UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled );
LRESULT OnLButtonDown( UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled );
LRESULT OnMouseMove(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
LRESULT OnEraseBkgnd(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
LRESULT OnQueryEndSession(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);

HICON m\_icoExit;
HICON m\_icoPrevYear;
HICON m\_icoNextYear;
HICON m\_icoPrevMonth;
HICON m\_icoNextMonth;
HICON m\_icoToday;
HFONT m\_icoTextFont;
int m\_CurrentRegion, m\_nOldRegion;

HICON m\_icoNodeClosed;
HICON m\_cioNodeOpen;
HICON m\_icoAttrib;
enum EnToolBtnState
{
	tbs\_normal = 0,
	tbs\_hover,
	tbs\_prress\_down,
}m\_nToolBtnState\[6\];
RECT m\_rcToolBtn\[6\];

HBRUSH m\_brToolBtnHover;
int m\_nLastToolBtnHit;

enum SKIN
{
	cpbob = 0,
	cpnobob,
	darkblue,
	silver,
	gold,
	black,
	lightblue,
	green,
	red,
	rose,
	aqua,
	neonblue,
	bluestreak,
	crystalgreen,
	crystalblack,
	crystalblue,
	crystalred,
	crystalyellow,
	silverring,
	minimal,
	white,
};

void SetSkin();

struct SKIN\_MENU\_DATA
{
	UINT nID;
	UINT nClockFaceBitmapId;
	UINT nDateBitmapId;
	TCHAR \*pszName;
};
static SKIN\_MENU\_DATA	m\_Skins\[\];
static int				m\_nSkins;
SKIN					m\_eSkin;
ATL::CString m\_strSkin;

SKIN GetSkinFromName(LPCTSTR lpszSkinName);

private:
void ParseNode(IDispatch* pNode,HTREEITEM hParent);
HTREEITEM CJMainForm::InsertTreeItem(HTREEITEM hItem, LPCTSTR lpszItem, int nImage,
int nSelec