问题
I am relatively new to OS X app development and I'm wondering if it possible to put a background image to a NSToolbar, such as in Game Center.app or Calender.app(iCal.app)? I have looked around and can't find anything on here or on google. It occured to me that there might not be a public API and it might be private. My app will not be submitted to Apple's Mac App Store, so I am able to use private APIs(if necessary). If anybody knows the API, I would be more than grateful! Thank you so much
~ Confused Mac Developer
回答1:
Refer AlteringTheAppearanceOfNSToolbar link. Hope helpful.
来源：https://stackoverflow.com/questions/12084699/set-background-image-nstoolbar