Disabling Menu Item

Question

One of my e-books explains how to add a new menu item. Well, that's not very difficult to figure out. It's not difficult to figure out how to link an IBAction to a new menu item, either. But this book and Google search results don't explain how to disable a menu item. More particularly, I want to disable Preferences and Quit, depending on where window currently appears. If the application currently shows the Preferences window, I want to disable these menu items.

Suppose that I have an IBOutlet named preferencesMenu and then that I have

[preferencesMenu setEnabled:NO];

, that won't disable the menu item in question. So how do you disable a particular menu item?

Thank you for your advice.

Tom

Answer 1

NSMenuItems disable themselves automatically only if both their target and selector are nil and NULL respectively.

[preferencesMenu setTarget:nil];
[preferencesMenu setAction:NULL];

Which a quick test reveals leads to this:

Answer 2

Just set the target to nil. I'll do the job.

[preferencesMenu setTarget:nil];