NSPopupButton on Toolbar with Image instead?

FROM : Mitchell Hashimoto
DATE : Tue Jan 15 18:45:36 2008

Hello,

I'm trying to get the XCode style contextual menu to popup when a
button is clicked on my toolbar (such as the "Build" button if you
hold it), but I can't figure out exactly how to do this!

Should I be subclassing NSPopupButton? NSButtonCell? Is there an
easier way for me to do this?

Thank you,
Mitchell