How to discover which image file is the current desktop background on Windows?

问题

It is possible to discover it programatically? It will use the Windows Registry? I'll need to take a screenshot of it and compare with the files on disk? Is it possible to discover even in the desktop slideshow mode?

回答1:

try this

using Microsoft.Win32;

private string GetCurrentWallpaper()

{
 using(RegistryKey MyWallPaper = Registry.CurrentUser.OpenSubKey("Control Panel\\Desktop", false))
 {
     return MyWallPaper.GetValue("WallPaper").ToString();
 }
}

Bye.

回答2:

public string GetCurrentWallpaper()
{
    using(var subKey = Registry.CurrentUser.OpenSubKey(@"Software\Microsoft\Internet Explorer\Desktop\General", false))
    {
        return subKey.GetValue("WallpaperSource").ToString();
    }
}

回答3:

The registry key is HKCU\Control Panel\Desktop\Wallpaper

回答4:

You need to use SystemParametersInfo() there is a tutorial on Geekpedia with more information on how to accomplish this with the different Windows OS's and systems.

来源：https://stackoverflow.com/questions/1490202/how-to-discover-which-image-file-is-the-current-desktop-background-on-windows