在C＃中更改Windows锁屏背景图像

Question

有没有办法使用pinvoke更改c＃中墙纸的锁屏图像。

[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事情（就像Bing桌面应用正在做的那样）

Answer 1

鉴于您的Windows 8标记，是的，您可以：

LockScreen.SetImageFileAsync()，如Windows 8 Lock screen personalization sample in C#所示（省略错误处理代码，请查看示例）：

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);