Help with trees, lists and checkboxes

I'm looking for some assistance extending the TreeListCtrl class to include the check box ability of the CustomTreeCtrl as well as 3-state check boxes. Main Column Column1 -- [o] Child1 |-[ ]Child1.1 |-[ ]C

Trees, Lists and Check Boxes

I'm looking for some assistance extending the TreeListCtrl class to include the check box ability of the CustomTreeCtrl as well as 3-state check boxes. Main Column Column1 -- [o] Child1 |-[ ]Child1.1 |-[ ]Ch