Hello! I'm trying to create an application that needs a toolbar. I'm using Mac and Qt 5.5. I used QToolbar and it looked different to traditional OS X toolbars. Later I found QtMacToolbar class and it works good. Unfortunately I see a problem with buttons. Here is a toolbar from the standard Pages.app:

Снимок экрана 2016-01-30 в 18.01.58.png

As you can see, each button has white rectangle around it. And here is a toolbar created with QMacToolbar:
Снимок экрана 2016-01-30 в 18.04.54.png
As you can see, there is no rectangle and icon looks awful.
Here is the code used to created it:

Qt Code: 
  1. toolBar = new QMacToolBar(this);
  2. QMacToolBarItem *toolBarItem =
  3. toolBar->addItem(QIcon(":/undo.png"), "foo");
  4.     connect(toolBarItem, SIGNAL(activated()), this, SLOT(onBarClick()));
  5.  
  6. toolBar->attachToWindow(this->window()->windowHandle());
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The rectangle seem to be a button, but how can I draw it?