QPopupMenu with dynamic adding/removing of toggled QActions possible?

Hi,

as a newcomer to the Qt library I'd like to pour out the following 
question to the community:

Can anybody help me with an appropriate technique in order to implement 
a QPopupMenu which can be dynamically grown/shrinked by adding/removing 
items of class QAction.

It's important for me to use the toggle facility of the QAction class, 
because there seems to be no suitable alternative, e.g. to add menu 
items directly using the QPopupMenu::insertItem( ... ) functions.

// ---------- CODE START ------------

...

QPopupMenu *popup_menu = new QPopupMenu( this );

QAction* new_item = new QAction( this, "new_item" );
new_item->setToggleAction( TRUE );
new_item->setOn( FALSE );
new_item->setText( "item_1" );
new_item->addTo( popup_menu );

...

// ------------ CODE END ------------


Using this concept I don't see any chance to get a valid (int) id that I 
can give to the new_item. And that would be what I'd need to use the 
QPopupMenu::removeItem( id ) for deleting items - or am I wrong?

The inherited QPopupMenu::setItemChecked( int id, bool checked ) seems 
to be another idea, but I think this is not an easy solution for my 
problem, because then I need to manage some more signal/slot-connections 
in order to realize mouse/keyboard events.

Is there a better technique for this task? Or do I have to manage a 
separate std::vector<QAction*> in order to use the QAction::removeFrom( 
QWidget *w ) for deletion?

Thanks a lot in advance for any idea!!!!

Martin