Solid and alpha-blended (semi-transparent) colors.
纯色和半透明混合颜色。
One simple and effective way of indicating nonfocus is to place a red box around an alpha-blended snapshot of the screen.
指示非焦点的一种简单而有效的方法是在阿尔法混合的屏幕快照周围放置一个红框。
No matter the options selected or the parameters specified, drawing an alpha-blended circle does not appear to be possible.
无论选定哪些选项或指定哪些参数，绘制阿尔法混合的圆形都显得不太可能。
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