DG 메시지
DG_MSG_ACTIVATE
DG_MSG_CHANGE
DG_MSG_CLICK
DG_MSG_CLOSE
DG_MSG_CONTEXTMENU
DG_MSG_DOUBLECLICK
DG_MSG_DRAGDROP
DG_MSG_FILTERCHAR
DG_MSG_FOCUS
DG_MSG_GROW
DG_MSG_HOTKEY
DG_MSG_INIT
DG_MSG_ITEMHELP
DG_MSG_LISTHEADERCLICK
DG_MSG_LISTHEADERDRAG
DG_MSG_LISTHEADERRESIZE
DG_MSG_LISTHEADERBUTTONCLICK
DG_MSG_MOUSEMOVE
DG_MSG_NULL
DG_MSG_RESIZE
DG_MSG_SPLITTERDRAG
DG_MSG_TRACK
DG_MSG_TOPSTATUSCHANGE
DG_MSG_UPDATE
DG_MSG_USER
DG_MSG_WHEELTRACK
