The CListCtrlWithCustomDraw Class In the OnCustomdraw for CListCtrlWithCustomDraw, I provide a generic handler for custom draw notifications. The bulk of the code is a switch statement on the draw stage we are up to (refer to my previous article). At each of the pre-paint stages, I call virtual functions to get color information, fonts required, and to take over (or augment) the drawing process. I also allow for extra drawing during the post-paint stages. Let's look at the fleshed out OnCustomdraw function for CListCtrlWithCustomDraw: void CListCtrlWithCustomDraw::OnCustomdraw(NMHDR* pNMHDR,LRESULT* pResult) {  // first, lets extract data from  // the message for ease of use later  NMLVCUSTOMDRAW* pNMLVCUSTOMDRAW = (NMLVCUSTOMDRAW*)pNMHDR;  // we'll copy the device context into hdc  // but won't convert it to a pDC* until (and if)  // we need it as this requires a bit of work  // internally for MFC to create temporary CDC  // objects  HDC hdc = pNMLVCUSTOMDRAW->nmcd.hdc;  CDC* pDC = NULL;    // here is the item info  // note that we don't get the subitem  // number here, as this may not be  // valid data except when we are  // handling a sub item notification  // so we'll do that separately in  // the appropriate case statements  // below.  int nItem = pNMLVCUSTOMDRAW->nmcd.dwItemSpec;  UINT nState = pNMLVCUSTOMDRAW->nmcd.uItemState;  LPARAM lParam = pNMLVCUSTOMDRAW->nmcd.lItemlParam;  // next we set up flags that will control  // the return value for *pResult  bool bNotifyPostPaint = false;  bool bNotifyItemDraw = false;  bool bNotifySubItemDraw = false;  bool bSkipDefault = false;  bool bNewFont = false;    // what we do next depends on the  // drawing stage we are processing  switch (pNMLVCUSTOMDRAW->nmcd.dwDrawStage) {   case CDDS_PREPAINT:   {    // PrePaint    m_pOldItemFont = NULL;    m_pOldSubItemFont = NULL;      bNotifyPostPaint = IsNotifyPostPaint();    bNotifyItemDraw = IsNotifyItemDraw();      // do we want to draw the control ourselves?    if (IsDraw()) {     if (! pDC) pDC = CDC::FromHandle(hdc);      CRect r(pNMLVCUSTOMDRAW->nmcd.rc);       // do the drawing     if (OnDraw(pDC,r)) {      // we drew it all ourselves      // so don't do default      bSkipDefault = true;     }    }   }   break;     case CDDS_ITEMPREPAINT:   {    // Item PrePaint    m_pOldItemFont = NULL;      bNotifyPostPaint = IsNotifyItemPostPaint(nItem,nState,lParam);    bNotifySubItemDraw = IsNotifySubItemDraw(nItem,nState,lParam);    // set up the colors to use    pNMLVCUSTOMDRAW->clrText =     TextColorForItem(nItem,nState,lParam);    pNMLVCUSTOMDRAW->clrTextBk =    BkColorForItem(nItem,nState,lParam);    // set up a different font to use, if any    CFont* pNewFont = FontForItem(nItem,nState,lParam);    if (pNewFont) {     if (! pDC) pDC = CDC::FromHandle(hdc);      m_pOldItemFont = pDC->SelectObject(pNewFont);     bNotifyPostPaint = true; // need to restore font    }    // do we want to draw the item ourselves?    if (IsItemDraw(nItem,nState,lParam)) {     if (! pDC) pDC = CDC::FromHandle(hdc);     if (OnItemDraw(pDC,nItem,nState,lParam)) {      // we drew it all ourselves      // so don't do default      bSkipDefault = true;     }    }   }   break;

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