To make check boxes act like radio buttons (mutually exclusive)

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If you have a list control in your dialog with the LVS_EX_CHECKBOXES style, you can make the check boxes to act like radiobuttons by adding two lines of code.. First map the LVN_ITEMCHANGED event of the list control from the class wizard and add the code shown

void CListDlg::OnItemchangedMylist(NMHDR* pNMHDR, LRESULT* pResult)
{
 NM_LISTVIEW* pNMListView = (NM_LISTVIEW*)pNMHDR;

 /* If the event is not fired because of any change in individual items then the oldstate and 
 newstate members of pNMListView are not used.  So check for that.*/

 if (!pNMListView->uOldState && !pNMListView->uNewState)
  return;

 // m_listctl is the member variable of the dialog which is of type CListCtl.
 BOOL bChecked = ListView_GetCheckState(m_listctl.m_hWnd, pNMListView->iItem);

 // if it's checked uncheck everything else.
 int nCount;

 if (bChecked)
  for(nCount=0;nCount<m_listctl.GetItemCount();nCount++)
   if(nCount != pNMListView->iItem)
    m_listctl.SetCheck(nCount, FALSE);
}

Date Last Update: February 1, 1999



Comments

  • I want partly checkbox in one column

    Posted by Legacy on 03/29/2003 12:00am

    Originally posted by: sandmanq

    I am poor English, Sorry.
    
    I create listctrl with checkbox.
    checkbox is made full in one column.
    I want partly checkbox in one column.
    How?:)

    Reply
  • How to disable clicking checkboxes

    Posted by Legacy on 12/21/2001 12:00am

    Originally posted by: osl

    void CMyDlgClass::OnClickList(NMHDR* pNMHDR, LRESULT* pResult) 
    
    {
    NM_LISTVIEW* pNMListView = (NM_LISTVIEW*)pNMHDR;
    m_nCurItem = pNMListView->iItem;
    UINT uFlags = 0;
    m_ListCtrl.HitTest(pNMListView->ptAction, &uFlags);
    if (uFlags == LVHT_ONITEMSTATEICON)
    {
    if (!m_ListCtrl.GetCheck(m_nCurItem)) m_ListCtrl.SetCheck(m_nCurItem);
    else m_ListCtrl.SetItemState(m_nCurItem, INDEXTOSTATEIMAGEMASK(1), LVIS_STATEIMAGEMASK);
    }

    *pResult = 0;
    }

    The same code in OnDblclkList function may be required.

    Reply
  • Another possibility

    Posted by Legacy on 12/05/2001 12:00am

    Originally posted by: Radu

    void MyClass::OnCheckBox1()
    
    {
    UpdateData(TRUE);
    if (IsDlgButtonChecked(1278))
    {
    CheckDlgButton(1278,BST_UNCHECKED);
    CheckDlgButton(1220,BST_CHECKED);
    }
    else
    {
    CheckDlgButton(1278,BST_CHECKED);
    CheckDlgButton(1220,BST_UNCHECKED);
    }
    }

    void MyClass::OnCheckBox2()
    {
    UpdateData(TRUE);
    if (IsDlgButtonChecked(1220))
    {
    CheckDlgButton(1278,BST_CHECKED);
    CheckDlgButton(1220,BST_UNCHECKED);
    }
    else
    {
    CheckDlgButton(1278,BST_UNCHECKED);
    CheckDlgButton(1220,BST_CHECKED);
    }

    }

    where OnCheckBox1,2 are member functions of the check box
    and 1278,1220 are the checkbox IDs.

    Reply
  • Ex(Properties)List

    Posted by Legacy on 10/07/2001 12:00am

    Originally posted by: Mike Philis

    Do you need an advanced list control? Check this out:
    
    http://www.exontrol.com/sg.jsp?content=products/exlist

    Mike
    www.exontrol.com

    Reply
  • How to disable clicking the CheckBox?

    Posted by Legacy on 05/15/2001 12:00am

    Originally posted by: Reichrath

    Good, but do you know how to disable clicking on the Checkbox?
    

    • Change picture index connected with this item to 0

      Posted by SzadQ on 06/01/2004 12:10pm

      Change picture index connected with this item to 0

      Reply
    Reply
  • Checkbox control in a ListCtrl?

    Posted by Legacy on 08/24/2000 12:00am

    Originally posted by: William Wacholtz

    Is it possible to disable a single row in a listctrl that has a checkbox checked? If it is, how?

    Reply
  • SetCheck?

    Posted by Legacy on 04/10/1999 12:00am

    Originally posted by: Andrei Korobkov

    SetCheck function is not a member of CListCtrl...

    Reply
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