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如何在Winforms / WPF中创建透明ElementHost

[英]How to create Transparent ElementHost's in Winforms/WPF

原文 2013-01-15 14:28:20 1 1 c#/ wpf/ transparency/ transparent/ elementhost

long time lurker and self taught OOP and c# thanks in good majority to the great people here. 长期潜伏和自学的OOP和C＃非常感谢这里的优秀人才。 99% of my problems I seem to find out by searching all over the net but I'm stuck with this one. 我似乎有99％的问题是通过网上搜索找到的，但我对此一无所知。

My problem is that I have a custom GUI where I'm stacking elementhost control elements that host WPF user controls. 我的问题是我有一个自定义GUI，在其中堆叠了承载WPF用户控件的elementhost控件元素。 I have successfully made these graphics appear and perform their behavior but they are not transparent with respect to each other. 我已经成功地使这些图形出现并执行了它们的行为，但是它们彼此之间并不透明。 I have stacked icons that overlap each other with a semi transparent edges where they should blend together. 我堆叠的图标相互重叠，并带有半透明的边缘，它们应融合在一起。 The icons were made in paint.net and indeed have correct graphics for transparency. 这些图标是在paint.net中制作的，确实具有正确的图形以提高透明度。 Using host.BackColorTransparency = true, I was able to make these element hosts transparent to background of my winforms GUI, but they are still not transparent with respect to each other. 使用host.BackColorTransparency = true，我能够使这些元素宿主对winforms GUI的背景透明，但是它们彼此之间仍然不透明。

I'm trying to be as descriptive as I can here. 我试图在这里尽可能地描述自己。 And since this is a work project I cannot display any proprietary information. 由于这是一个工作项目，因此我无法显示任何专有信息。 Please let me know if anyone needs any more information. 请让我知道是否有人需要更多信息。 Thank you for any help. 感谢您的任何帮助。

1 个解决方案

This MSDN article mentions a trick called 'bitmap copying'. 此 MSDN文章提到了一个称为“位图复制”的技巧。

Actually this means the ElementHost paints the background of the owner control to its own drawing surface. 实际上，这意味着ElementHost将所有者控件的背景绘制到其自己的绘图表面上。 This is a simple 1:1 relation. 这是一个简单的1：1关系。 It does not take the overlapping controls into account. 它没有考虑重叠的控件。