1 files changed, 13 insertions, 0 deletions

diff --git a/libkcal/incidence.cpp b/libkcal/incidence.cpp
index 39c14f5..fe9f854 100644
--- a/libkcal/incidence.cpp
+++ b/libkcal/incidence.cpp
@@ -337,29 +337,42 @@ void Incidence::setReadOnly( bool readOnly )
       mRecurrence->setRecurReadOnly( readOnly);
 }
 void Incidence::setLastModifiedSubInvalid()
 {
     mLastModifiedSub = QDateTime();
     if ( mRelatedTo )
         mRelatedTo->setLastModifiedSubInvalid();
 }
+QString Incidence::lastModifiedSubSortKey() const
+{
+    if ( mLastModifiedSubSortKey.isEmpty() )
+        return lastModifiedSortKey();
+    return mLastModifiedSubSortKey;
+}
 QDateTime Incidence::lastModifiedSub()
 {
     if ( !mRelations.count() )
         return lastModified();
     if ( mLastModifiedSub.isValid() )
         return mLastModifiedSub;
     mLastModifiedSub = lastModified();
     Incidence * inc;
     QPtrList<Incidence> Relations = relations();
     for (inc=Relations.first();inc;inc=Relations.next()) {
         if ( inc->lastModifiedSub() > mLastModifiedSub )
             mLastModifiedSub = inc->lastModifiedSub();
     }
+    mLastModifiedSubSortKey.sprintf("%04d%02d%02d%02d%02d%02d",
+                                    mLastModifiedSub.date().year(),
+                                    mLastModifiedSub.date().month(),
+                                    mLastModifiedSub.date().day(),
+                                    mLastModifiedSub.time().hour(),
+                                    mLastModifiedSub.time().minute(),
+                                    mLastModifiedSub.time().second() );
     return mLastModifiedSub;
 }
 void Incidence::setCreated(QDateTime created)
 {
   if (mReadOnly) return;
   mCreated = getEvenTime(created);
 }