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请问九宫格有什么用？
@LHL518 如果希望一个图形在拉伸后边角不变形，那就可以用九宫格组件来做，比较常见的例子就是那种通用窗口底框吧，需要变换不同的尺寸又要保持边角不变形，就可以不用很多个精灵，而是直接用一个九宫格组件
