如何通过编程方式更改Wallpaper？

问题描述

我在主要壁纸目录的几个子目录中有很多壁纸。

在Windows 7中，如果选择幻灯片，它只会使用图像当前目录，子目录中没有图像。

现在我的想法是编写一个程序，让我选择多个目录并创建一个新的临时目录，其中包含所有这些图像，设置窗口使用所有这些图像的幻灯片，然后删除临时目录。

即使原始文件被删除，Windows也会以某种方式缓存当前的壁纸图片，我认为如果它的幻灯片显示有很多图像会不会发生？

现在的问题是，如何在Windows 7中使用C＃设置壁纸幻灯片？

并且谷歌搜索我发现很多人只说bmp或者只是bmp和jpg文件是支持的，这是真的吗？如果是这样，那么当我手动设置壁纸时我怎能只使用png图像呢？

解决方案

I have a lot of wallpapers I have in several sub directories of a main wallpaper directory.

Sadly in Windows 7 if you select a slideshow it only uses the images in the current directory and no images in sub directories.

Now my idea was to write a program that lets me select multiple directories and create a new temp directory with all the images in these, set windows to use a slideshow of all these images and then delete the temp directory.

Windows somehow caches the current wallpaper image even if the original file is deleted, I assume that doesn't happen if its a slideshow with many images?

Now the question is, how do I set a wallpaper slideshow in Windows 7 with C#?

And googling this I found a lot of people saying only bmp or only bmp and jpg files are supported, is this true? If so, how can that be when I can only use png images if I manually set a wallpaper?

解决方案

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