C# Definition:

[StructLayout(LayoutKind.Sequential)]
public struct WALLPAPEROPT
{
     public static readonly int SizeOf = Marshal.SizeOf(typeof(WALLPAPEROPT));
     public int dwSize;
     public WallPaperStyle dwStyle;
}

VB Definition:

Structure WALLPAPEROPT
   Public TODO
End Structure

User-Defined Field Types:

None.

Notes:

WALLPAPEROPT opts = new WALLPAPEROPT();

opts.dwSize = WALLPAPEROPT.SizeOf;

See WallPaperStyle.