Implemented to override the default action of enabling or disabling a specific menu item.
Original signature is '- (BOOL)validateMenuItem:(NSMenuItem *)menuItem'
Available in Mac OS X v10.0 and later.

C# | Visual Basic | Visual C++ |
bool ValidateMenuItem( NSMenuItem menuItem )
Function ValidateMenuItem ( _ menuItem As NSMenuItem _ ) As Boolean
bool ValidateMenuItem( NSMenuItem^ menuItem )

- menuItem (NSMenuItem)
- An NSMenuItem object that represents the menu item.

YES to enable menuItem, NO to disable it.

- Available in Monobjc Bridge: 10.6 (For Mac OS X 10.6 and later), 10.5 (For Mac OS X 10.5 and later)