I want to present NSTextView-like context menu for a certain NSString object (say, "text") each time -rightMouseDown-method of my custom NSResponder-subclass get called.

Where can I obtain these items for some NSString?
UPD
Created NSTextView instance and used its -menuForEvent:-method. Some of items was disabled (like 'copy' and so on), I reset its target value to custom object with overridden selectors (like -copy: and others).
NSTextViewis anNSViewsubclass, which provides a class method+defaultMenu. So you can ask forNSMenu * menu = [NSTextView defaultMenu];to get your very own copy to do with as you please. You may have to walk its structure and customize individualNSMenuIteminstances to adjust their target/action but most (all?) should work just fine with nil-target (sends action to first responder) and their default action.I must admit, however, I'm not sure what you mean by "Where can I obtain these items for some
NSString?" The context menu is opened from some UI control (like a text view) and sends its action (like-checkSpelling...) to some target (like the first responder; which should be something like a text view, which acts as the view for a string or attributed string) to act upon.