May 2003
Intermediate to advanced
566 pages
27h 29m
English
Content preview from Cocoa in a Nutshell
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Name
NSMenuValidation — Mac OS X 10.0
Synopsis
This informal protocol declares the single method
validateMenuItem:, which is implemented by classes
of the a
menu’s target object. The class implements this
method to return a BOOL specifying whether the
menu item should be enabled or disabled. Whenever a menu is
displayed, each menu item will send a
validateMenuItem: message to its target (if the
target responds), which then responds with YES or
NO depending on whether or not the menu item
should be enabled.
@interface NSObject (NSMenuValidation)
|
// Instance Methods
|
- (BOOL)validateMenuItem:(id <NSMenuItem>)menuItem; |
@end |
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