Saves the graphics state of the form.
保存窗体的图形状态。
Restores the translated graphics state and fills a rectangle with a solid blue brush.
还原经过平移的图形状态并用纯蓝色画笔填充一个矩形。
Based on this state, you might make decisions about which graphics to include, what font sizes to use, or any number of other possibilities.
根据这种状态,您可以决定要包括哪些图形、要使用多大的字体或任何其它可能的事情。
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