The HasButtons property has effect only if the data is displayed as a grid. Use the InsertItem property to let the control displays your data as a grid. Use the TreeColumnIndex property to select the column where the hierarchy is displayed.  Use the LinesAtRoot property to let the control displays a line that links the root items of the control. Use the CellVAlignment property to specify where the +/- AND the cell's caption is displayed in the item's client area. For instance, you can't have the +/- sign aligned to the top of the cell, and its caption aligned to the bottom. The +/- signs are always centered to the cell's caption, only the cell's caption can be aligned to the top or to the bottom of the cell's client area.