Port to new connect api

src/editor/kmcomposerwin.cpp

@@ -478,8 +478,7 @@ KMComposerWin::KMComposerWin(const KMime::Message::Ptr &aMsg, bool lastSignState
     connect(identity, &KIdentityManagement::IdentityCombo::identityChanged, [this](uint val) {
         slotIdentityChanged(val);
     });
-    connect(kmkernel->identityManager(), SIGNAL(changed(uint)), this,
-            SLOT(slotIdentityChanged(uint)));
+    connect(kmkernel->identityManager(), QOverload<uint>::of(&KIdentityManagement::IdentityManager::changed), this, [this](uint val) { slotIdentityChanged(val); });
 
     connect(mEdtFrom, &MessageComposer::ComposerLineEdit::completionModeChanged, this, &KMComposerWin::slotCompletionModeChanged);
     connect(kmkernel->folderCollectionMonitor(), &Akonadi::Monitor::collectionRemoved, this, &KMComposerWin::slotFolderRemoved);

src/kmkernel.cpp

@@ -192,8 +192,8 @@ KMKernel::KMKernel(QObject *parent)
     mCollectionModel->setDynamicSortFilter(true);
     mCollectionModel->setSortCaseSensitivity(Qt::CaseInsensitive);
 
-    connect(folderCollectionMonitor(), SIGNAL(collectionChanged(Akonadi::Collection,QSet<QByteArray>)),
-            SLOT(slotCollectionChanged(Akonadi::Collection,QSet<QByteArray>)));
+    connect(folderCollectionMonitor(), QOverload<const Akonadi::Collection &, const QSet<QByteArray> &>::of(&Akonadi::ChangeRecorder::collectionChanged), this,
+            &KMKernel::slotCollectionChanged);
 
     connect(MailTransport::TransportManager::self(), &MailTransport::TransportManager::transportRemoved, this, &KMKernel::transportRemoved);
     connect(MailTransport::TransportManager::self(), &MailTransport::TransportManager::transportRenamed, this, &KMKernel::transportRenamed);

src/kmmainwidget.cpp

@@ -1151,7 +1151,8 @@ void KMMainWidget::createWidgets()
             this, &KMMainWidget::slotItemRemoved);
     connect(kmkernel->folderCollectionMonitor(), &Monitor::itemMoved,
             this, &KMMainWidget::slotItemMoved);
-    connect(kmkernel->folderCollectionMonitor(), SIGNAL(collectionChanged(Akonadi::Collection,QSet<QByteArray>)), SLOT(slotCollectionChanged(Akonadi::Collection,QSet<QByteArray>)));
+    connect(kmkernel->folderCollectionMonitor(), QOverload<const Akonadi::Collection &, const QSet<QByteArray> &>::of(&ChangeRecorder::collectionChanged),
+            this, &KMMainWidget::slotCollectionChanged);
 
     connect(kmkernel->folderCollectionMonitor(), &Monitor::collectionStatisticsChanged, this, &KMMainWidget::slotCollectionStatisticsChanged);
 }