Added tagSECURITY_ATTRIBUTES, a struct implementation of SECURITY_ATTRIBUTES, for those few times it's needed.

PInvoke/Shared/WinBase/SECURITY_ATTRIBUTES.cs

@@ -29,4 +29,34 @@ namespace Vanara.PInvoke
 		/// </summary>
 		[MarshalAs(UnmanagedType.Bool)] public bool bInheritHandle;
 	}
+
+	/// <summary>
+	/// The SECURITY_ATTRIBUTES structure contains the security descriptor for an object and specifies whether the handle retrieved by
+	/// specifying this structure is inheritable. This structure provides security settings for objects created by various functions, such as
+	/// CreateFile, CreatePipe, CreateProcess, RegCreateKeyEx, or RegSaveKeyEx.
+	/// </summary>
+	[PInvokeData("winbase.h")]
+	[StructLayout(LayoutKind.Sequential)]
+	public struct tagSECURITY_ATTRIBUTES
+	{
+		/// <summary>The size, in bytes, of this structure. Set this value to the size of the SECURITY_ATTRIBUTES structure.</summary>
+		public int nLength;
+
+		/// <summary>
+		/// A pointer to a SECURITY_DESCRIPTOR structure that controls access to the object. If the value of this member is NULL, the object
+		/// is assigned the default security descriptor associated with the access token of the calling process. This is not the same as
+		/// granting access to everyone by assigning a NULL discretionary access control list (DACL). By default, the default DACL in the
+		/// access token of a process allows access only to the user represented by the access token.
+		/// </summary>
+		public PSECURITY_DESCRIPTOR lpSecurityDescriptor;
+
+		/// <summary>
+		/// A Boolean value that specifies whether the returned handle is inherited when a new process is created. If this member is TRUE,
+		/// the new process inherits the handle.
+		/// </summary>
+		[MarshalAs(UnmanagedType.Bool)] public bool bInheritHandle;
+
+		/// <summary>A default instance of this structure with the size set.</summary>
+		public static readonly tagSECURITY_ATTRIBUTES Default = new tagSECURITY_ATTRIBUTES { nLength = Marshal.SizeOf(typeof(SECURITY_ATTRIBUTES)) };
+	}
 }