I have TreeView with context menu (QMenu) in my program. But it have to be dynamic one, I mean than menu items created in runtime. Each item have his own set of actions.
My problem is how to avoid memory leaks.

I will illustrate it by example:

Qt Code: 
  1. //menu initialization:
  2. treeMenu = new QMenu(ui->objectTree);
  3. connect(ui->objectTree,SIGNAL(customContextMenuRequested(const QPoint&)),this,SLOT(treePopupShow(const QPoint&)));
  4.  
  5. // slot
  6. void MyProgram::treePopupShow(const QPoint & point) {
  7.     QModelIndex index = ui->objectTree->indexAt(point);
  8.     if(index.isValid())
  9.     {
  10.         TreeItem * item = static_cast<TreeItem *>(index.internalPointer());
  11.         if(item)
  12.         {
  13.              treeMenu->clear();
  14.              switch(item->getType())
  15.              {
  16.                     case NodeType1:
  17.                     QMenu * submenu1 = treeMenu->addMenu(tr("submenu1")); // memory leak
  18.                     foreach(QString action,actionList1)
  19.                     {
  20.                         QAction * action = submenu1->addAction(action);
  21.                         action->setData(action);
  22.                     }
  23.                     break;
  24.                     case NodeType2:
  25.                     QMenu * submenu2 = treeMenu->addMenu(tr("submenu2")); // memory leak
  26.                     foreach(QString action,actionList2)
  27.                     {
  28.                         QAction * action = submenu2->addAction(action);
  29.                         action->setData(action);
  30.                     }
  31.                     break;
  32.              }
  33.         }
  34. }
To copy to clipboard, switch view to plain text mode 

It will be tens of such submenus like submenu1 and submenu2. and tens of top items. treeMenu->clear() clears only actions, not submenus. May be I have to store all of them to delete every time when menu is shown?