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.
  3.   BOOL CMyListView::PreCreateWindow(CREATESTRUCT& cs)
      {
        //adding styles
        cs.style |= LVS_REPORT;
        return CListView::PreCreateWindow(cs);
      }
    
  4. Add columns to the view .cpp file.
  5.   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);
        }
      }
    
  6. Add the following line to the message map area of the view header(.h) file.
  7.     afx_msg void OnCustomDraw(NMHDR* pNMHDR, LRESULT*
                                  pResult);
    
  8. Add the following line to the message map area of the view .cpp file.
  9.     ON_NOTIFY_REFLECT(NM_CUSTOMDRAW, OnCustomDraw)
    
  10. Add the OnCustomDraw function.
  11.         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;
                  }
               }
            }
    

Downloads

Download source - 19 Kb


Comments

Leave a Comment
  • Your email address will not be published. All fields are required.

Top White Papers and Webcasts

  • Organizations are increasingly gravitating toward mobile-first application development as they assess the need to revamp their application portfolios to support touch computing and mobility. Consumerization has brought higher expectations for application usability along with the mobile devices themselves. Enterprises are increasingly shifting their new application acquisitions and development efforts toward mobile platforms. With this backdrop, it is natural to expect application platform vendors to invest in …

  • Cloud computing isn't new, but it's still a hot topic in technology circles. Moving to the cloud has done great things for many businesses. When it comes to handling a basic business necessity, cloud computing has brought many improvements to overall business continuity. Using the cloud for DR makes a lot of sense for many, but it's not exactly the most simple concept. Read this eBook to find answers to all the key questions IT professionals have about cloud-based disaster recovery, and helpful info around the …

Most Popular Programming Stories

More for Developers

RSS Feeds

Thanks for your registration, follow us on our social networks to keep up-to-date