如何以编程方式设置
Windows 7 Wallpaper幻灯片？
设置普通壁纸
[DllImport("user32.dll",CharSet = CharSet.Auto)]
private static extern Int32 SystemParametersInfo(UInt32 uiAction,UInt32 uiParam,String pvParam,UInt32 fWinIni);
private static UInt32 SPI_SETDESKWALLPAPER = 20;
private static UInt32 SPIF_UPDATEINIFILE = 0x1;
public void SetImage(string filename)
{
SystemParametersInfo(SPI_SETDESKWALLPAPER,filename,SPIF_UPDATEINIFILE);
}
我到现在才发现：
C:\Users\CurrentUser\AppData\Roaming\Microsoft\Windows\Themes\
C:\Users\CurrentUser\AppData\Roaming\Microsoft\Windows\Themes\TranscodedWallpaper.jpg
(during a slideshow the file is changing automatically)
解决方法
试试这个
public sealed class Wallpaper
{
Wallpaper() { }
const int SPI_SETDESKWALLPAPER = 20;
const int SPIF_UPDATEINIFILE = 0x01;
const int SPIF_SENDWININICHANGE = 0x02;
[DllImport("user32.dll",CharSet = CharSet.Auto)]
static extern int SystemParametersInfo(int uAction,int uParam,string lpvParam,int fuWinIni);
public enum Style : int
{
Tiled,Centered,Stretched
}
public static void Set(Uri uri,Style style)
{
System.IO.Stream s = new System.Net.WebClient().OpenRead(uri.ToString());
System.Drawing.Image img = System.Drawing.Image.FromStream(s);
string tempPath = Path.Combine(Path.GetTempPath(),"wallpaper.bmp");
img.Save(tempPath,System.Drawing.Imaging.ImageFormat.Bmp);
RegistryKey key = Registry.CurrentUser.OpenSubKey(@"Control Panel\Desktop",true);
if (style == Style.Stretched)
{
key.SetValue(@"WallpaperStyle",2.ToString());
key.SetValue(@"TileWallpaper",0.ToString());
}
if (style == Style.Centered)
{
key.SetValue(@"WallpaperStyle",1.ToString());
key.SetValue(@"TileWallpaper",0.ToString());
}
if (style == Style.Tiled)
{
key.SetValue(@"WallpaperStyle",1.ToString());
}
SystemParametersInfo(SPI_SETDESKWALLPAPER,tempPath,SPIF_UPDATEINIFILE | SPIF_SENDWININICHANGE);
}
}
最初的问题是this
