How to resize the menu Icons in main window toolbar

I want to find a way to change the size of icons in the menus (like New,Open,etc.) main window toolbar


http://i.imgur.com/lKSjV.png

i want this images become greater than this size

QToolBar contains the answer you seek.

sorry, I don't know how to use it. Do you have any code sample?

thanks the problem solved :)

can you tell what you have done...?

You do not even need to scroll down the linked page: QToolBar::setIconSize()