CTreeCtrl 의 CheckBox 상태 변경 이벤트 작성하기

#define WM_USER_TREE_CHANGE_CHECK        WM_USER + 100

void CTestDlg::DoDataExchange(CDataExchange* pDX)
{
    CDialog::DoDataExchange(pDX);
    DDX_Control(pDX, IDC_TREE, m_ctrlTree);
}

BEGIN_MESSAGE_MAP(CTestDlg, CDialog)
    :
    ON_NOTIFY(NM_CLICK, IDC_TREE, &CTestDlg::OnNMClickTree)
    ON_MESSAGE( WM_USER_TREE_CHANGE_CHECK, &CTestDlg::OnTreeChangeCheck )
    :
END_MESSAGE_MAP()

void CTestDlg::OnNMClickTree(NMHDR *pNMHDR, LRESULT *pResult)
{
    DWORD pos = ::GetMessagePos();
    CPoint point( LOWORD( pos ), HIWORD( pos ) ); 

    m_ctrlTree.ScreenToClient( &point );

    UINT nFlags = 0;
    HTREEITEM hItem = m_ctrlTree.HitTest( point, &nFlags ); 

    if ( hItem )
    {
        if ( nFlags & TVHT_ONITEMSTATEICON )
        {
            PostMessage( WM_USER_TREE_CHANGE_CHECK, (WPARAM)pNMHDR->hwndFrom, (LPARAM)hItem ); 
        }
    }

    *pResult = 0;
}

LRESULT CTestDlg::OnTreeChangeCheck( WPARAM wParam, LPARAM lParam )
{
    HTREEITEM hItem = (HTREEITEM)lParam;

    HTREEITEM hParent = m_ctrlTree.GetParentItem( hItem );
    if ( hParent )
    {
        BOOL bCheck = m_ctrlTree.GetCheck( hItem );

        m_ctrlTree.SetCheck( hParent, bCheck );
    }

    return 0;
}

Original Post : http://neodreamer-dev.tistory.com/330