A multi-check ListBox

CMultiCheckListBox example  Download Source Code and Example project


I had a desire/requirement on a recent project to have a CCheckListbox class that allowed for more than one checkbox in front of the string. The 3-state style set by the CCheckListbox simply didn't do what I wanted or needed. I had a list of people who could fall into 2 different categories at the same time. The 3-state style told me that this person fell into one category, but I had to just know WHICH one.

So, I decided to write a class that extended the capabilities of the CCheckListbox. What I came up with was the CMultiCheckListBox class. What it does is add another checkbox in front of the original checkbox in the CCheckListbox implementation.

To use the class, follow these steps:
  • Add a member variable to the desired class (CDialog, CFormView, etc.)
     CMultiCheckListBox m_List; 
  • Subclass the list box variable just created.
    
     void CCharityReportDlg::DoDataExchange(CDataExchange* pDX)
     {
        CDialog::DoDataExchange(pDX);
        //{{AFX_DATA_MAP(CCharityReportDlg)
        DDX_Control(pDX, IDC_LIST1, m_List);
        //}}AFX_DATA_MAP
     }
                
  • To set the first checkbox for listbox item nIndex, call SetCheck(nIndex, nCheck)
     m_List.SetCheck(nIndex,1); 
  • To set the second checkbox, call SetMultiCheck(nIndex, nCheck)
     m_List.SetMultiCheck(nIndex,1); 
  • To retrieve the checkbox state of the first checkbox, call GetCheck(nIndex)
     m_List.GetCheck(nIndex); 
  • To retrieve the checkbox state of the second checkbox, call GetMultiCheck(nIndex)
     m_List.MultiGetCheck(nIndex); 

Last updated: 4 July 1998



Comments

  • No Error

    Posted by Legacy on 01/31/2002 12:00am

    Originally posted by: Yakov

    No Error. Pls delete in file " MultiCheckListBox.cpp"
    lines in AFX_CHECKLIST_STATE::_AFX_CHECKLIST_STATE():

    for Windows NT.
    // if (afxData.bWin4 || AfxGetCtl3dState()-//>m_pfnSubclassDlgEx != NULL)
    // VERIFY(bitmap.LoadBitmap(AFX_IDB_CHECKLISTBOX_95));
    // else

    Reply
  • Error when use MFC in a Static Library

    Posted by Legacy on 01/13/1999 12:00am

    Originally posted by: Franck Buland


    When compiling with "use MFC in a Static Library", in Debug mode or in Release mode, I obtain the following messages:

    Linking...
    nafxcw.lib(winctrl3.obj) : error LNK2005: "public: __thiscall _AFX_CHECKLIST_STATE::_AFX_CHECKLIST_STATE(void)" (??0_AFX_CHECKLIST_STATE@@QAE@XZ) already defined in MultiCheckListBox.obj
    nafxcw.lib(winctrl3.obj) : error LNK2005: "public: virtual __thiscall _AFX_CHECKLIST_STATE::~_AFX_CHECKLIST_STATE(void)" (??1_AFX_CHECKLIST_STATE@@UAE@XZ) already defined in MultiCheckListBox.obj
    nafxcw.lib(winctrl3.obj) : error LNK2005: "class CProcessLocal<class _AFX_CHECKLIST_STATE> _afxChecklistState" (?_afxChecklistState@@3V?$CProcessLocal@V_AFX_CHECKLIST_STATE@@@@A) already defined in MultiCheckListBox.obj
    Release/CheckBoxTest.exe : fatal error LNK1169: one or more multiply defined symbols found

    Reply
  • error!?

    Posted by Legacy on 01/05/1999 12:00am

    Originally posted by: konrad

    Doesn't work with vc6.0
    #include <afximpl.h> not found

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

Top White Papers and Webcasts

  • As virtualization becomes the norm throughout organizations of nearly all sizes, and as more organizations look to private cloud solutions, IT decision makers are increasingly in need of ways to keep storage costs and complexity under control in the face of often-runaway virtual machine (VM) sprawl. Application-aware storage is designed to help achieve these important goals. Read this white paper to learn how application-aware storage allows you to gain VM-level visibility into application performance and …

  • Relying on outside companies to manage your network and server environments for your business and applications to meet the needs and demands of your users can be stressful. This is especially true as many Managed Hosting organizations fail to meet their service level agreements. Read this Forrester total economic impact report and learn what makes INetU different and how they exceed their customers' managed hosting expectations.

Most Popular Programming Stories

More for Developers

RSS Feeds

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