遍历NSView下的子视图方法

如何遍历NSView下的子视图呢

for (NSView *aview in [SuperV subviews])

    {

          if([aview isMemberOfClass:[NSButton class]])

          {

              NSButton *cButton=(NSButton *)aview;

              [cButton setBezelStyle:NSRoundedBezelStyle];

              [cButton setWantsLayer:YES];

              [cButton setBordered:NO];

          }

    }