C＃更改桌面模式

Question

我正在製作一個簡單的壁紙更換器。它更改壁紙時，但我不能改變壁紙的模式。我試過這樣的東西，但它不工作：S

SystemParametersInfo(SPI_SETDESKPATTERN, 0, "Center", 
SPIF_UPDATEINIFILE | SPIF_SENDWININICHANGE); 

可以some1請給我看設置壁紙圖案的正確方法？

Answer 1

我想你指的是中心/ streched /瓷磚設置，這將是第二個過去值INT 1-3

[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 = 0x14; 
     private static readonly UInt32 SPIF_UPDATEINIFILE = 0x01; 
     private static readonly UInt32 SPIF_SENDWININICHANGE = 0x02; 

     private void SetWallpaper(string path) 
     { 
      if (File.Exists(path)) 
      { 
       Image imgInFile = Image.FromFile(path); 
       try 
       { 
        imgInFile.Save(SaveFile, ImageFormat.Bmp); 
        SystemParametersInfo(SPI_SETDESKWALLPAPER, 3, SaveFile, SPIF_UPDATEINIFILE | SPIF_SENDWININICHANGE); 
       } 
       catch 
       { 
        MessageBox.Show("error in setting the wallpaper"); 
       } 
       finally 
       { 
        imgInFile.Dispose(); 
       } 
      } 
     }