@Matt Ball is right - you can use NSSegmentedControl
s, even for single one-time click buttons. Just set the number of segments to 1, and set the mode to "Select None".
One of my shipping apps uses this technique, see below:
All of the controls there are NSSegmentedControl
, including the single one.
Update: there are a few standard button icons which are meant for toolbars. The NSImage Class Reference has a list.
In the above screenshot, only two of the buttons are using built-in images: NSLeftFacingTriangleTemplate, and NSRightFacingTriangleTemplate. The others I drew myself.