[Bug 2447] New: EM_FINDTEXTEX returns zero for no match

[Wine Bugs]

http://bugs.winehq.org/show_bug.cgi?id=2447

Summary: EM_FINDTEXTEX returns zero for no match
           Product: Wine
           Version: unspecified
          Platform: Other
        OS/Version: other
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: wine-gui
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]

calling CRichEditCtrl::FindText() on an empty control returns 0 when it should 
return -1.

the following code, which works okay in windows, goes into an infinite loop 
under wine.

FINDTEXTEX fte = { { 0, GetTextLength() - 1 }, "searchstring", {0, 0} };
long lFind = FindText(FR_WHOLEWORD, &fte);

while (lFind != -1)
{
   ...
}

i've added some logic in my code to handle empty contents so this is not an 
immediate problem. also verified that after the change it ran fine.