1 files changed, 11 insertions, 2 deletions

diff --git a/libkcal/incidencebase.cpp b/libkcal/incidencebase.cpp
index 9aa517c..7525a4a 100644
--- a/libkcal/incidencebase.cpp
+++ b/libkcal/incidencebase.cpp
@@ -192,56 +192,65 @@ QString IncidenceBase::dtStartTimeStr() const
 QString IncidenceBase::dtStartDateStr(bool shortfmt) const
 {
   return KGlobal::locale()->formatDate(dtStart().date(),shortfmt);
 }
 
 QString IncidenceBase::dtStartStr(bool shortfmt) const
 {
   return KGlobal::locale()->formatDateTime(dtStart(), shortfmt);
 }
 
 
 bool IncidenceBase::doesFloat() const
 {
   return mFloats;
 }
 
 void IncidenceBase::setFloats(bool f)
 {
   if (mReadOnly) return;
   mFloats = f;
   updated();
 }
 
 
-void IncidenceBase::addAttendee(Attendee *a, bool doupdate)
+bool IncidenceBase::addAttendee(Attendee *a, bool doupdate)
 {
-  if (mReadOnly) return;
+  if (mReadOnly) return false;
   if (a->name().left(7).upper() == "MAILTO:")
     a->setName(a->name().remove(0,7));
 
+  QPtrListIterator<Attendee> qli(mAttendees);
+  
+  qli.toFirst();
+  while (qli) {
+      if (*qli.current() == *a)
+          return false;
+      ++qli;
+  }
   mAttendees.append(a);
   if (doupdate) updated();
+  return true;
 }
 
 #if 0
 void IncidenceBase::removeAttendee(Attendee *a)
 {
   if (mReadOnly) return;
   mAttendees.removeRef(a);
   updated();
 }
 
 void IncidenceBase::removeAttendee(const char *n)
 {
   Attendee *a;
 
   if (mReadOnly) return;
   for (a = mAttendees.first(); a; a = mAttendees.next())
     if (a->getName() == n) {
       mAttendees.remove();
       break;
     }
 }
 #endif
 
 void IncidenceBase::clearAttendees()