Anti-aliased text and alpha blended pixmaps.
抗锯齿文本和混合视频的象素映射。
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。
For example, when drawing a circle, create decreasing radius and alpha-blended circles around the main point for a nice fade-out effect.
例如，绘制圆形时，在中心点周围创建半径逐渐减少的阿尔法混合圆形可以获得优美的渐变效果。
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