Signal for treeview row change

[Andreas Volz <lists brachttal net>]

Hello,

I use this to connect a signal handler in a treeview:

  m_siteTreeView.signal_row_activated().connect(sigc::mem_fun(*this,
                 &SideBar::onTreeviewRowActivated) 

But the signal is only thrown if I double click on a row. But I like a
signal if I normal click the treeview.

regards
Andreas