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   -(void)rightMouseDown:(NSEvent *)theEvent  
{  
    cvcont = [[CollectionViweItemSubClass alloc] init ];  
    NSMenu * m = [[NSMenu alloc] init];  
    //[cvcont openInFinder];----perfectly working------  
    [self setTarget:cvcont];  
    [m addItemWithTitle:@"show in finder" action:@selector(openInFinder) keyEquivalent:@""];// not working-----  
    [NSMenu popUpContextMenu:m withEvent:theEvent forView:self];  
}

我将按钮子类化并从类中调用方法 CollectionViweItemSubClass。如果我像往常一样打电话,它正在工作。但该方法未通过 连接NSMenu。下面的代码是我在 CollectionViewItemSubClass 类中的方法

-(void)openInFinder {
NSString *savedValue = [[NSUserDefaults standardUserDefaults]
                        stringForKey:@"filePath"];
[[NSWorkspace sharedWorkspace] selectFile:savedValue inFileViewerRootedAtPath:nil];

}

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