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是否有任何 api 可以更改scroller长度，我想在没有子类化的情况下做同样的事情NSScroller。

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NSScroller (as a subclass of NSView) has a setFrame: method that takes an NSRect. Pass in the appropriate width or height to set the length of your control.

于 2011-09-08T20:14:11.403 回答