treelistctrl and scrollbars

[Jürgen Kareta]

Hello,

I use a gizmos.TreeListCtrl in my app. If the control is initialized 
without wx.TR_HIDE_ROOT the scrollbars appear
if  the  expanded tree needs more space than  available. But if it is 
initialized with wx.TR_HIDE_ROOT the scrollbars doesn't appear.

How can I have scrollbars and hidden root ?

Thanks in advance
Jürgen