在C＃中更改Windows锁屏背景图片 [英] Change Windows Lock Screen background image in C#

问题描述

有没有办法来改变喜欢使用的PInvoke在C＃中的墙纸锁屏图像。

Is there a way to change the lock screen image like the wall paper in c# using pinvoke.

[DllImport("user32.dll", CharSet = CharSet.Auto)]
private static extern Int32 SystemParametersInfo(UInt32 action,
        UInt32 uParam, string vParam, UInt32 winIni);
private static readonly UInt32 SPI_SETDESKWALLPAPER = 20;
private static UInt32 SPIF_UPDATEINIFILE = 0x1;
private static uint MAX_PATH = 260;

// then I call
SystemParametersInfo(SPI_SETDESKWALLPAPER, 0, file, SPIF_UPDATEINIFILE);

我想为锁屏做同样的（如Bing的桌面应用正在做）

I'd like to do the same for the lockscreen (like the Bing Desktop app is doing)

推荐答案

由于您的Windows 8标签，是的，你可以：

Given your Windows 8-tag, yes you can:

的 LockScreen.SetImageFileAsync（） ，这表现在的在C＃中 Windows 8的锁屏界面的个性化样品（错误处理代码省略，检查样品）：

LockScreen.SetImageFileAsync(), as demonstrated on Windows 8 Lock screen personalization sample in C# (error handling code omitted, check the sample):

StorageFile imageFile = await imagePicker.PickSingleFileAsync();

// Application now has access to the picked file, setting image to lockscreen.  
// This will fail if the file is an invalid format.
await LockScreen.SetImageFileAsync(imageFile);

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