CTreeCtrl horizontal scrollbar

hi does anybdoy know how to disable the horizontal scrollbar of the CTreeCtrl i have searched everywhere and didnt find an answer on msdn says:
"TVS_NOHSCROLL Version 5.80. Disables horizontal scrolling in the control. The control will not display any horizontal scroll bars."

but how to use the 5.80 version ? i really need this disabled please

edit: solved using ModifyStyle(0, 0x8000);
now the only problem i still have is when i create a modeless dialog window in double click event of the ctreectrl the ctreectrl gets focus after the dialog is showed how is that possible and is there a way to fix this ?
thanks

edit2:
solved using PostMessage(WM_SETFOCUS);
lol never knew theres a difference between SetForegroundWindow, SetFocus() and that