http://developer.apple.com/library/mac/#documentation/Cocoa/Conceptual/MenuList/Articles/EnablingMenuItems.html#//apple_ref/doc/uid/20000261-BAJBFGED
15-Aug-11 16:08, McLaughlin, Michael P. пишет:
I have a Cocoa document app targeting Snow Leopard. It is, in most respects, a standard document app except that, given an input file, it launches a long, multi-threaded computation. Consequently, it can handle only one input file at a time. For the obvious reasons, I would very much like to disable the File/Open… command while the computation is proceeding. However, nothing I have been able to find seems to work with this command. For instance, the code below will disable the Open Recent command but the Open command seems immune. I have also tried to intercept the Open command in myDocController.m with a call to -(BOOL)validateMenuItem:(id)sender
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