Create a Listbox in Dialog

I want to create a simple Listbox in a dialog and populate it with some dynamic strings. I placed a Treeview in dialog using this code in fr-file:

TreeViewWidget

        (

            myListID,            // fWidgetId

            kSysStaticTextPMRsrcId,        // fRsrcId, fRsrcPlugin

            kBindNone,

            Frame( 10, 10, 280, 200  ),

            kTrue,            // fVisible

            kTrue,            // fEnabled

            kTrue,            // fEraseBeforeDraw

            kInterfacePaletteFill,            // InterfaceColor to erase to

            "",        // control label

            kFalse,        // Display Root Node

            kFalse,        // Use H scroll bar

            kTrue,        // Use V scroll bar

            20,        // Vertical Scroll Button increment

            20,        // Vertical Thumb Scroll increment

            0,        // Horizontal Scroll Button increment

            0,        // Horizontal Thumb Scroll increment

            1,        // Items selectable, 0 = No Selection, 1 = Single Selection, 2 = Multiple Selection

            kTrue,        // Allow children from multiple parents to be selected

            kTrue,        // Allow discontiguous selection

            {

            }

        )

In my dialog i see the list box containing entries 0-9. How can i remove these entries and add my own strings? In PanelTreeView and other samples i cant find a solution.

In DialogController::InitializeDialogFields I tried to init the list like this without effect:

IControlView* treeView = pPanelData->FindWidget( myListID );

InterfacePtr<ITreeViewMgr> iTreeMgr(treeView, UseDefaultIID();

iTreeMgr->ClearTree(kTrue);

Is treeview in cs6 the only possiblity for creating a listbox with selectable entries? A Dropdownlist is no option because user must see multipe entries after opening dialog.