Comments on: MultiInput class – multiple mice in your XNA game!

By: multimolti

multimolti — Mon, 26 Sep 2011 17:04:47 +0000

I’m sorry, this project has been suspended.

By: Tybs

Tybs — Fri, 01 Jul 2011 16:36:51 +0000

I hope this is still looked at…

Currently, I am trying to make use of MultiInput.dll so I will have multiple mouse pointers available in my application. For some reason, however, I get the following error when running the code you have given:

An unhandled exception of type ‘System.OutOfMemoryException’ occurred in MultiInput.dll

Clear enough, but I don’t have a clue on how to fix this. Is there still someone around who can help?

Greetz,
Tybs

By: Anton Lind

Anton Lind — Mon, 18 Apr 2011 18:00:50 +0000

Hello!
Is any1 still active on this thread?
Im working on a game that requires 2 mice, but this dll wont seem to work for xna 4.0. Is there a newer ver or does any1 know a simple solution(like this one) for xna 4.0?
I seem to get some kind of null reference when i try to “new” the MultiInputController , and ive been trying to work my way around it but without result.

By: Christos

Christos — Fri, 18 Feb 2011 17:15:09 +0000

Hi all and thanks for the interesting blog

I want to handle 2 mouses in my laptop (it runs win7 64bit version)
and I use the following code (XNA 4)

.
.
.using MultiInput;
.
.
public class Game1 : Microsoft.Xna.Framework.Game
{

public static IntPtr hndl;
public static MultiInputController inputController;
.
.
.

protected override void LoadContent()
{

spriteBatch = new SpriteBatch(GraphicsDevice);
font = Content.Load(”InfoFont”);
hndl = base.Window.Handle;

inputController = new MultiInputController(hndl);

when the code reaches the point for new MultiInputController
it throws an exception

System.ExecutionEngineException was unhandled
Message: An unhandled exception of type ‘System.ExecutionEngineException’ occurred in Unknown Module.

In some cases it throws a Out of Memory Exception.

I would be grateful if you could help me.

By: Tommy

Tommy — Sun, 30 Jan 2011 16:58:26 +0000

I put the Dispose function in UnloadContent(), and when I exit the game it still won’t kill the process of my game so I must go into the taskmanager on My OS and end it myself. What should I do?

By: Lennart Moltrecht (admin)

Lennart Moltrecht (admin) — Mon, 31 May 2010 21:04:19 +0000

Thanks for the code! I guess my website erased the smaller/bigger than signs because they could be HTLM markers.

By: Caio Cesar Moreira

Caio Cesar Moreira — Mon, 31 May 2010 11:50:04 +0000

I don’t know why but when I’ve pasted the code the if clause lost some information, here is how they should be:

if (0 < mouse.Buttons.Length)
…
if (1 < mouse.Buttons.Length)
…
if (2 < mouse.Buttons.Length)

By: Caio Cesar Moreira

Caio Cesar Moreira — Mon, 31 May 2010 11:45:04 +0000

The fixed version of the UpdateRawMouse for supporting the touch-pad or any other mouse which doesn’t have 3 buttons is:

public void UpdateRawMouse(IntPtr dHandle)
{
int hRawInput = dHandle.ToInt32();
int pcbSize = 0;
RAWINPUT rawInput = new RAWINPUT();
int num3 = RawInput.GetRawInputData(hRawInput, 0×10000003, IntPtr.Zero, ref pcbSize, Marshal.SizeOf(typeof(RAWINPUTHEADER)));
num3 = RawInput.GetRawInputData(hRawInput, 0×10000003, ref rawInput, ref pcbSize, Marshal.SizeOf(typeof(RAWINPUTHEADER)));
foreach (RawMouse mouse in this.Mice)
{
if (mouse.Handle.ToInt32() == rawInput.header.hDevice)
{
mouse.X += rawInput.mouse.lLastX;
mouse.Y += rawInput.mouse.lLastY;

if (0 0)
{
mouse.Buttons[0] = true;
}
else
{
mouse.Buttons[0] = false;
}
}

if (1 0)
{
mouse.Buttons[1] = true;
}
else
{
mouse.Buttons[1] = false;
}
}

if (2 0)
{
mouse.Buttons[2] = true;
}
else
{
mouse.Buttons[2] = false;
}
}

if ((rawInput.mouse.usButtonFlags & 0×400) > 0)
{
if (((short) rawInput.mouse.usButtonData) > 0)
{
mouse.Z++;
}
if (((short) rawInput.mouse.usButtonData) < 0)
{
mouse.Z–;
}
}
}
}
}

Regards,
Caio Cesar Moreira

By: Caio Cesar Moreira

Caio Cesar Moreira — Mon, 31 May 2010 11:06:35 +0000

Hi Lennart,

Thanks for your reply.
The crash is happening inside the DLL, however I can’t see why the crash is happening except I see its source code.
Couldn’t you release the source code of it or at least place a treatment in MultiInput.RawMouseInput.UpdateRawMouse(IntPtr dHandle)?

Best regards,

By: Lennart Moltrecht (admin)

Lennart Moltrecht (admin) — Fri, 28 May 2010 23:36:12 +0000

Hi!

I heard of that issue before (see comments above), but I currently don’t have any laptop capable of running XNA so I can’t test it. Try to find the reason for yourself (probably the touchpad doesn’t return proper X/Y coordinates and gives negative numbers or something like that), so an error will be caused.
If you find a solution it would be great if you could fix it!