SMenu、SHeader在界面最大化的时候，高、宽没有跟随界面变化

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请注意，这并不是issue 请仔细阅读Slint对原生Window内置组件的描述： The Window geometry will be restricted by its layout constraints: Setting the width will result in a fixed width, and the window manager will respect the min-width and max-width so the window can’t be resized bigger or smaller. The initial width can be controlled with the preferred-width property. The same applies to the Windows height. 意思是Window受到布局约束，它的宽度由min-width和max-width进行限定，因此它无法被重置大小，它的初始化由preferred-width控制，它的高也一样

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若你想要获取Window最大化后的大小可以使用API： pub fn size(&self)->PhysicalSize 或尝试使用重绘： pub fn request_redraw(&self)