Implementing CustomDraw into Your Project

Environment: MFC

Here are the steps you need to perform to use this utility:

1. Create the MFC project with view as ListView.
2. Apply styles to the view .cpp file.

  BOOL CMyListView::PreCreateWindow(CREATESTRUCT& cs)
  {
    //adding styles
    cs.style |= LVS_REPORT;
    return CListView::PreCreateWindow(cs);
  }

3. Add columns to the view .cpp file.

  void CMyListView::OnInitialUpdate()
  {
    CListView::OnInitialUpdate();

    CListCtrl& ListCtrl = GetListCtrl();

    //inserting 5 cols
    ListCtrl.InsertColumn(0, "Col-1", LVCFMT_LEFT, 75);
    ListCtrl.InsertColumn(1, "Col-2", LVCFMT_LEFT, 100);
    ListCtrl.InsertColumn(2, "Col-3", LVCFMT_LEFT, 100);
    ListCtrl.InsertColumn(3, "Col-4", LVCFMT_LEFT, 100);
    ListCtrl.InsertColumn(4, "Col-5", LVCFMT_LEFT, 100);

    //adding 10 items
    CString item;
    for(int i=0;i<10;i++)
    {
      item.Format("Item-%d",i);
      ListCtrl.InsertItem(i,item);
    }
  }

4. Add the following line to the message map area of the view header(.h) file.

    afx_msg void OnCustomDraw(NMHDR* pNMHDR, LRESULT*
                              pResult);

5. Add the following line to the message map area of the view .cpp file.

    ON_NOTIFY_REFLECT(NM_CUSTOMDRAW, OnCustomDraw)

6. Add the OnCustomDraw function.

        void CMyListView::OnCustomDraw(NMHDR* pNMHDR,
                                       LRESULT* pResult)
        {
         *pResult = 0;

           COLORREF dwColourTxt = 0;
           COLORREF dwColourBk = RGB(255, 255, 255);

           LPNMLVCUSTOMDRAW  lplvcd = (LPNMLVCUSTOMDRAW)pNMHDR;

           switch(lplvcd->nmcd.dwDrawStage)
           {
              Case CDDS_PREPAINT:
              {
                 *pResult = CDRF_NOTIFYITEMDRAW;
                 return;
              }

              // Modify item text and or background
              Case CDDS_ITEMPREPAINT:
              {
                 if(lplvcd->nmcd.dwItemSpec == 0)
                 {
                    dwColourTxt = RGB(255, 0, 0);     // Red
                 }
                 else if(lplvcd->nmcd.dwItemSpec == 1)
                 {
                    dwColourTxt = RGB(0, 255, 0);     // Green
                 }
                 Else
                 {
                    dwColourTxt = RGB(0, 0, 255);     // Blue
                 }
                 lplvcd->clrText = dwColourTxt;
                 // If you want the sub items the same as
                 // the item, set *pResult to CDRF_NEWFONT
                 *pResult = CDRF_NOTIFYSUBITEMDRAW;
                 return;
              }

              // Modify sub item text and or background
              case CDDS_SUBITEM | CDDS_PREPAINT | CDDS_ITEM:
              {
                 // Ignore the first sub item; it is the item
                 // handled above
                 if(lplvcd->iSubItem != 0)
                 {
                    // First sub item
                    if(lplvcd->iSubItem == 1)
                    {
                       dwColourTxt = RGB(0, 127, 127);
                                     // Pale blue
                       dwColourBk = RGB(255, 255, 255);
                                     // White
                    }
                    // All sub items after the first
                    Else
                    {
                       dwColourTxt = RGB(255, 255, 255);
                                   // White
                       if(lplvcd->nmcd.dwItemSpec == 0)
                       {
                          dwColourBk = RGB(255, 0, 102);
                                   // Red
                       }
                       else if(lplvcd->nmcd.dwItemSpec == 1)
                       {
                          dwColourBk = RGB(204, 255, 153);
                                   // Green
                       }
                       Else
                       {
                          dwColourBk = RGB(0, 102, 204);
                                   // Blue
                       }
                    }
                    lplvcd->clrText = dwColourTxt;
                    lplvcd->clrTextBk = dwColourBk;
                 }
                 *pResult = CDRF_NEWFONT;
                 return;
              }
           }
        }

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