else // unset the tooltip
wxToolTip::Remove(hwndRbtn, 0, wxRect(0,0,0,0));
// the second parameter can be zero since it's ignored by Remove()
else // unset the tooltip
wxToolTip::Remove(hwndRbtn, 0, wxRect(0,0,0,0));
// the second parameter can be zero since it's ignored by Remove()