Hi everyone, I am trying to add Trees (CTreeCtrl) controls to Tab boxes (CTabCtrl) in MFC (Visual C++ 6.0). I created a dialog box and put a tab control on it, but it wouldn't let me put a tree on it. So then I initiated the tab and added 4 tabs to it. Now I'm trying to figure out how to add a tree control to one of the tabs. I created a variable of type CTreeCtrl and tried to assign its parent to the tab, but that didn't work. Does anyone know how I can make this work? Brain21.