c# - 在 C# 中更改 Windows 锁定屏幕背景图像

Question

有没有办法使用 pinvoke 在 c# 中像墙纸一样更改锁屏图像。

[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);

我想对锁屏做同样的事情(就像 Bing 桌面应用所做的那样)

Answer 1

根据您的 Windows 8 标签，是的，您可以:

LockScreen.SetImageFileAsync() ，如 Lock screen personalization sample in C# 所示(错误处理代码省略，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);