-300  OFFSET
-10 HDN_BEGINDRAG
 -6 HDN_BEGINTRACK
 -5 HDN_DIVIDERDBLCLICK
-11 HDN_ENDDRAG
 -7 HDN_ENDTRACK
-13 HDN_FILTERBTNCLICK
-12 HDN_FILTERCHANGE
 -9 HDN_GETDISPINFO
 -1 HDN_ITEMCHANGED
 -0 HDN_ITEMCHANGING
 -2 HDN_ITEMCLICK
 -3 HDN_ITEMDBLCLICK
 -8 HDN_TRACK
-26 HDN_BEGINTRACKW
-25 HDN_DIVIDERDBLCLICKW
-27 HDN_ENDTRACKW
-29 HDN_GETDISPINFOW
-21 HDN_ITEMCHANGEDW
-20 HDN_ITEMCHANGINGW
-22 HDN_ITEMCLICKW
-23 HDN_ITEMDBLCLICKW
-28 HDN_TRACKW
