[Bug 30282] New: treeview: OnExpanding is incorrectly sent to items with no children

http://bugs.winehq.org/show_bug.cgi?id=30282

Bug #: 30282
           Summary: treeview: OnExpanding is incorrectly sent to items
                    with no children
           Product: Wine
           Version: 1.4
          Platform: x86
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: comctl32
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]
    Classification: Unclassified

Created attachment 39560
  --> http://bugs.winehq.org/attachment.cgi?id=39560
simple delphi app monitoring TreeView events

See the attached Delphi application. It creates a new subitem in OnExpanding
event handler. Clicking under the second + sign sends OnExpanding event to the
third item. Double-clcking the third item does the same. With native comctl32
it is possible to expand only the first two items.