OS X QToolbar/QMacToolbar

[Xanx]

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:

toolBar = new QMacToolBar(this);
QMacToolBarItem *toolBarItem =
toolBar->addItem(QIcon(":/undo.png"), "foo");
    connect(toolBarItem, SIGNAL(activated()), this, SLOT(onBarClick()));
 
toolBar->attachToWindow(this->window()->windowHandle());

toolBar = new QMacToolBar(this);
QMacToolBarItem *toolBarItem =
toolBar->addItem(QIcon(":/undo.png"), "foo");
    connect(toolBarItem, SIGNAL(activated()), this, SLOT(onBarClick()));

toolBar->attachToWindow(this->window()->windowHandle());

To copy to clipboard, switch view to plain text mode 

The rectangle seem to be a button, but how can I draw it?

[bozz]

Did you solve the problem in the end?