SharpDX.Direct Input in Unity - unity3d

Question

I've been trying to implement DirectInput into unity using SharpDX.DirectInput dlls, but when i create a joystick, it gives me an error:
SharpDXException: HRESULT: [0x80070057], Module: [General], ApiCode: [E_INVALIDARG/Invalid Arguments], Message: The parameter is incorrect.
and here is my code:
using System;
using UnityEngine;
using SharpDX.DirectInput;
namespace KurdifyEngine.Input
{
static class Direct
{
public static DirectInput directInput;
public static Guid directGuid;
public static Joystick directGamepad ;
internal static void Initialize()
{
// Initialize DirectInput
directInput = new DirectInput();
directGuid = Guid.Empty;
DirectUpdate();
}
internal static void DirectUpdate()
{
// search for Gamepad
foreach (var deviceInstance in directInput.GetDevices(SharpDX.DirectInput.DeviceType.Gamepad, DeviceEnumerationFlags.AttachedOnly))
directGuid = deviceInstance.InstanceGuid;
}
if (directGuid != Guid.Empty)
{
directGamepad = new Joystick(directInput, directGuid);
}
}
}
}
the error happens when i create a joystick:
directGamepad = new Joystick(directInput, directGuid);

Answer 1

We have been developing exotic controller support for a Unity product and encountered the same problem (SharpDXException: HRESULT: [0x80070057]) on the exact same line.
We tried recompiling the SharpDX by fixing it like it is explained in this github post: https://github.com/sharpdx/SharpDX/issues/406 but encountered other problems with the DirectX (June 2010) SDK.
We just found a way to compile our Unity project using the libraries included in this project (which is an add-on for exotic controllers support in Kerbal Space Program): https://github.com/pbatard/AltInput just pick up the .dll under Libraries/, replace your old .dll by these and you're good to go !