c gets the windows desktop background code sample

  • 2020-05-27 06:56:40
  • OfStack

#region  To obtain windows Desktop background 
        [System.Runtime.InteropServices.DllImport("user32.dll", CharSet = System.Runtime.InteropServices.CharSet.Auto, SetLastError = true)]
        public static extern int SystemParametersInfo(int uAction, int uParam, StringBuilder lpvParam, int fuWinIni);
        private const int SPI_GETDESKWALLPAPER = 0x0073;

void WindowsBtn_Click(object sender, RoutedEventArgs e)
            // Define the size of the storage buffer 
            StringBuilder s = new StringBuilder(300);
            // To obtain Window  Desktop background image address, using buffer 
            SystemParametersInfo(SPI_GETDESKWALLPAPER, 300, s, 0);
            // Characters in the buffer are converted 
            string wallpaper_path = s.ToString(); // System desktop background image path 

Call windows api get

Note that the size of StringBuilder should not be less than 255, because the windows path supports a maximum of 255. If the definition is too small...

Returns empty if the current system desktop has no background or is a solid color.

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