XmDropSiteUpdate — A Drag and Drop function that sets resource values for a drop site "XmDropSiteUpdate"

XmDropSiteUpdate modifies drop site resources associated with the specified widget. This routine  updates
       the drop site resources specified in the arglist.

       widget    Specifies the ID of the widget registered as a drop site

       arglist   Specifies the argument list

       argcount  Specifies the number of attribute/value pairs in the argument list (arglist)

       For a complete definition of DropSite and its associated resources, see XmDropSite(3).

XmDropSiteUpdate  — A Drag and Drop function that sets resource values for a drop site "XmDropSiteUpdate"
       "Drag and Drop functions" "XmDropSiteUpdate"

XmDropSite(3),     XmDropSiteEndUpdate(3),     XmDropSiteRegister(3),    XmDropSiteStartUpdate(3),    and
       XmDropSiteUnregister(3).

                                                                                             XmDropSiteUpdate(3)

       #include <Xm/DragDrop.h>
       voidXmDropSiteUpdate(
       Widgetwidget,
       ArgListarglist,
       Cardinalargcount);