See nothing wrong in this? ;)

connect( mNormalIconButton, SIGNAL(iconChanged(QString)),
         this, SLOT(slotChangeIcon(const QString&)) );

svn path=/trunk/kdenetwork/kmail/; revision=198085

kmfolderdia.cpp

@@ -134,7 +134,7 @@ KMFolderDialog::KMFolderDialog(KMFolder *aFolder, KMFolderDir *aFolderDir,
 	   ilabel2, SLOT(setEnabled(bool)) );
 
   connect( mNormalIconButton, SIGNAL(iconChanged(QString)),
-	   this, SLOT(slotChangeIcon(const QString&)) );
+	   this, SLOT(slotChangeIcon(QString)) );
 
   //end icons group
 
@@ -624,7 +624,7 @@ KMFolderDialog::slotUnreadExpiryUnitChanged( int value )
 
 
 void
-KMFolderDialog::slotChangeIcon( const QString& icon )
+KMFolderDialog::slotChangeIcon( QString icon ) // can't use a const-ref here, due to KIconButton's signal
 {
     mUnreadIconButton->setIcon( icon );
 }

kmfolderdia.h

@@ -34,7 +34,7 @@ protected slots:
   virtual void slotExpireFolder( bool );
   void slotReadExpiryUnitChanged( int );
   void slotUnreadExpiryUnitChanged( int );
-  virtual void slotChangeIcon( const QString& icon );
+  void slotChangeIcon( QString icon );
   /*
    * is called if the folder dropdown changes
    * then we update the other items to reflect the capabilities