Find centralized, trusted content and collaborate around the technologies you use most.
Teams
Q&A for work
Connect and share knowledge within a single location that is structured and easy to search.
我需要重写什么函数来在 NSTableView 周围绘制自定义焦点环（或者我需要子类 NSScrollView 包含表的内容）？可能有一些自定义对焦环绘图的例子吗？