wpf - 使图像的一部分透明

Question

我想将图像放在按钮上，但我希望图像的一部分是透明的。我该怎么做呢？

Answer 1

试试 Image.OpacityMask 属性。你可以给它一个画笔，指定你想要透明的区域。

编辑 :来自 MSDN :

There is no direct support for color-keying a bitmap in WPF. However, it is fairly easy to implement on your own. Dwayne has implemented a ColorKeyBitmap on his blog: http://blogs.msdn.com/dwayneneed/archive/2008/06/20/implementing-a-custom-bitmapsource.aspx I believe it links to the code on Codeplex as well. You could also accomplish this simply by reading your bitmap into system memory, iterating through all the pixels and setting their values yourself, and constructing a new bitmap out of that array.