开关的前景和背景颜色。
实现图像的抠图功能，即把前景和背景分开。
In order to matting image, that is to separate the foreground and background.
你可以设置一个前景色和一个背景色但也就只能如此了。
You can set a foreground and a background but that’s about it.
这是一个拉动起来的背景和前景的方式。
That is one way of pulling the background and foreground together.
除此之外，你当然可以改变前景色和背景色，这也支持透明。
Besides that, you can of course change ForeColor and BackColor, which also support transparency.
因此，它有着广泛的应用背景和较好的市场前景。
Thus, they have comprehensive application fields and good market prospective.
因此，它有着广泛的应用背景和较好的市场前景。
Thus, they have comprehensive application fields and good market prospective.
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