// For a radiobutton, we get the radiobox from GWL_USERDATA (which is set
// by code in msw/radiobox.cpp), for all the others we just search up the
// window hierarchy
// For a radiobutton, we get the radiobox from GWL_USERDATA (which is set
// by code in msw/radiobox.cpp), for all the others we just search up the
// window hierarchy