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 two 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);
History
- 13th December, 1999: Initial version
License
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