Windows窗体 - 透明背景PNG [英] Windows Forms - PNG with transparency as background

问题描述

我工作的一个小的个人项目，我需要建立一个非rectanguar窗口（更精确的圆 - 尽管这可能会改变），有阴影。我有改变区域属性，如果形式设置为背景PNG。

I'm working on a small personal project and I need to create a non-rectanguar window (a circle to be more precise - though that might change) that has a drop shadow. I have the round window by changing the Region property if the form with a png set as background.

的东西是窗口alised和PNG的透明度不圆窗加工。所以，问题是我如何获得AA antialised窗口和背景图像或antialised圆形窗口，一个方法来添加阴影效果到窗口的透明度。

The thing is the window is alised and the transparency of the PNG is not working. So the question is how do I get a a antialised window and the transparency of the background image OR the antialised circular window and a way to add the drop shadow effect to the window.

感谢。

推荐答案

您需要做的分层窗口使用的p / Invoke

You need to make a Layered Window using P/Invoke.

的这里是一个.NET的例子。

Here is a .Net example.

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