Assume someone changed the font of the label, that you stored the new font and the related flag, and now you want LayoutManager to invoke the validation phase again.
假设某人更改了标签的字体，然后您存储了新的字体和相关标记，现在您需要让Layout Manager再次调用验证阶段。
Assume someone changed the font of the label, that you stored the new font and the related flag, and now you want LayoutManager to invoke the validation phase again.
假设某人更改了标签的字体，然后您存储了新的字体和相关标记，现在您需要让Layout Manager再次调用验证阶段。
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