class CWLWListBox: public CListBox 
{
DECLARE_DYNAMIC (CWLWListBox) 

Public: 
CWLWListBox (); 
Virtual ~ CWLWListBox (); 

Int AddString (LPCTSTR lpszItem); 
Int AddString (LPCTSTR lpszItem, a COLORREF RGB); 
Int InsertString (int nIndex, LPCTSTR lpszItem); 
Int InsertString (int nIndex, LPCTSTR lpszItem, a COLORREF RGB); 
Void SetItemColor (int nIndex, a COLORREF RGB); 

BOOL m_nSelectChange; 
COLORREF m_clrFore;//the foreground color 
COLORREF m_clrBack;//background color 
The CBrush m_brush; 

Protected: 
DECLARE_MESSAGE_MAP () 
Public: 
Afx_msg BOOL OnEraseBkgnd * pDC (CDC); 
Afx_msg void OnLbnSelchange (); 
Afx_msg void OnLButtonDown (UINT nFlags, CPoint point); 
Virtual void DrawItem (LPDRAWITEMSTRUCT LPDRAWITEMSTRUCT/* */); 
Afx_msg void OnHScroll (UINT nSBCode, UINT nPos, CScrollBar * pScrollBar); 
Afx_msg void OnVScroll (UINT nSBCode, UINT nPos, CScrollBar * pScrollBar); 
Afx_msg void OnPaint (); 
Virtual void MeasureItem (LPMEASUREITEMSTRUCT LPMEASUREITEMSTRUCT/* */); 
}; 

//WLWListBox. CPP: implementation file 
//

# include "stdafx. H" 
# include "WLWListBox. H" 


//CWLWListBox 

IMPLEMENT_DYNAMIC (CWLWListBox CListBox) 

CWLWListBox: : CWLWListBox () 
{
M_nSelectChange=FALSE; 
} 

CWLWListBox: : ~ CWLWListBox () 
{
} 

Int CWLWListBox: : AddString (LPCTSTR lpszItem) 
{
Return ((CListBox *) this) - & gt; AddString (lpszItem); 
} 

Int CWLWListBox: : AddString (LPCTSTR lpszItem, a COLORREF RGB) 
{
Int nIndex=CListBox: : AddString (lpszItem); 

If (nIndex & gt;=0) 
SetItemData (nIndex, RGB); 

Return nIndex. 
} 

Int CWLWListBox: : InsertString (int nIndex, LPCTSTR lpszItem) 
{
Return ((CListBox *) this) - & gt; InsertString (nIndex lpszItem); 
} 

Int CWLWListBox: : InsertString (int nIndex, LPCTSTR lpszItem, a COLORREF RGB) 
{
Int nItemIndex=((CListBox *) this) - & gt; InsertString (nIndex lpszItem); 

If (nItemIndex & gt;=0) 
SetItemData (nItemIndex, RGB); 

Return nItemIndex; 
} 

Void CWLWListBox: : SetItemColor (int nIndex, a COLORREF RGB) 
{
SetItemData (nIndex, RGB); 
RedrawWindow (); 
} 


BEGIN_MESSAGE_MAP (CWLWListBox CListBox) 
ON_WM_ERASEBKGND () 
ON_CONTROL_REFLECT (LBN_SELCHANGE, & amp; CWLWListBox: : OnLbnSelchange) 
ON_WM_LBUTTONDOWN () 
ON_WM_HSCROLL () 
ON_WM_VSCROLL () 
ON_WM_PAINT () 
END_MESSAGE_MAP () 



//CWLWListBox message handler 

BOOL CWLWListBox: : OnEraseBkgnd (pDC) CDC * 
{
//TODO: add the message handler code and/or invoke the default 

//pDC - & gt; SetBkMode (TRANSPARENT); 
//CBitmap bitmap. 
//bitmap. LoadBitmap (IDB_BITMAP2); 

//the CDC dcCompatible; 
//dcCompatible CreateCompatibleDC (pDC); 
//CBitmap * pOldbitmap=dcCompatible. SelectObject (& amp; Bitmap); 

//CRect the rect. 
//GetClientRect (& amp; The rect);//access controls the rectangular area of the client area 

//BITMAP bm. 
//bitmap. GetBitmap (& amp; Bm); 
//int nBmWidth=bm. BmWidth; 
//int nbmHeight=bm. BmHeight; 
//pDC - & gt; StretchBlt (0, 0, the rect. Width (), the rect. Height (), & amp; DcCompatible, 0, 0, nBmWidth nbmHeight, SRCCOPY); 
////pDC - & gt; BitBlt (0, 0, the rect. Width (), the rect. Height (), & amp; DcCompatible, 0, 0, SRCCOPY); 
//dcCompatible SelectObject (pOldbitmap); 
//return TRUE; 

Return CListBox: : OnEraseBkgnd (pDC); 
} 


Void CWLWListBox: : OnLbnSelchange () 
{
//TODO: add the control notification handler code 
//m_nSelectChange=TRUE; 
} 


Void CWLWListBox: : OnLButtonDown (UINT nFlags, CPoint point) 
{
//TODO: add the message handler code and/or invoke the default 
If (m_nSelectChange) 
{
M_nSelectChange=FALSE; 
Invalidate (). 
} 
CListBox: : OnLButtonDown (nFlags, point); 
} 

Void CWLWListBox: : DrawItem (LPDRAWITEMSTRUCT LPDRAWITEMSTRUCT) 
{

If (lpDrawItemStruct - & gt; ItemID==1) 
{
DrawFocusRect (lpDrawItemStruct - & gt; HDC, & amp; LpDrawItemStruct - & gt; RcItem); 
return; 
} 

The CDC * pDC=CDC: : FromHandle (lpDrawItemStruct - & gt; HDC); 

COLORREF clrOld; 
Cstrings sText; 

COLORREF clrNew=(a COLORREF) (lpDrawItemStruct - & gt; ItemData); 

//item in the selected state, set the highlight 
If ((lpDrawItemStruct - & gt; ItemState & amp; ODS_SELECTED) & amp; & 
(lpDrawItemStruct - & gt; ItemAction & amp; (ODA_SELECT | ODA_DRAWENTIRE))) 
{
CBrush brush (: : GetSysColor (COLOR_HIGHLIGHT)); 
PDC - & gt; FillRect (& amp; LpDrawItemStruct - & gt; RcItem, & amp; Brush); 
} 

//lost item selected 
if (! (lpDrawItemStruct - & gt; ItemState & amp; ODS_SELECTED) & amp; & 
(lpDrawItemStruct - & gt; ItemAction & amp; ODA_SELECT)) 
{
CBrush brush (: : GetSysColor (COLOR_WINDOW)); 
PDC - & gt; FillRect (& amp; LpDrawItemStruct - & gt; RcItem, & amp; Brush); 
} 

//the item gains focus 
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