Resolved How do I unregister a InputAction.performed ?

I am doing an inventory system controlled with keyboard (no mouse) and I'm implementing a drop/remove item function.
When I select an inventory slot it gathers the slot infos (location, item inside, etc.)
When I deselect of course I clear the variables
I'm using the new input system, I've set up a key (DELETE) for that function, the thing is that every time I select a button, I'm adding the performed event, and so all the slots I've been on will be deleted, cause I'm not unsubscribing the event.
The code is this:

Code (CSharp):

1. public void OnSelect(GameObject obj)
2.     {
3.         selectedItem.destinationObj = obj;
4.         if (itemsDisplayed.ContainsKey(obj))
5.             selectedItem.destinationItem = itemsDisplayed[obj];
6.  
7.         inputInventory.InventoryUInavigation.Drop.performed += ctx => inventory.RemoveItem(itemsDisplayed[obj].item);
8.     }
9.     public void OnDeselect(GameObject obj)
10.     {
11.         selectedItem.destinationObj = null;
12.         selectedItem.destinationItem = null;
13.     }

As you can see, I have this method called RemoveItem that needs a variable to pass, which is the slot I'm on. I have seen that you can unsubscribe if you write something like this:

Code (CSharp):

1. public void Drop(InputAction.CallbackContext context)
2.     {
3.         // Do things
4.     }

and then

Code (CSharp):

1. inputInventory.InventoryUInavigation.Drop.performed += Drop;
2.  
3. inputInventory.InventoryUInavigation.Drop.performed -= Drop;
4.  

But I need to pass a variable on that method, and with this I can't do it. Please help me

 

you need

Code (CSharp):

1. void FunctionName(UnityEngine.InputSystem.InputAction.CallbackContext obj){
2.  
3.  
4. }

 

Yeah but I can't pass my GameObject argument with that

 

Hmm, can't you just do .. ?

Code (CSharp):

1. void FunctionName(UnityEngine.InputSystem.InputAction.CallbackContext obj, GameObject yourObj){
2.  
3. }

 

Unfortunately I already tried and no, it doesn't work...

EDIT: I solved it, tomorrow I'll post the code if someone ever needs this.

 

Code (CSharp):

1. public Action<InputAction.CallbackContext> handler;
2.  
3. void Drop (InputAction.CallbackContext ctx, GameObject obj)
4.     {
5.         // This is the method called when you subscribe to handler's event
6.         inventory.RemoveItem(itemsDisplayed[obj].item);
7.     }
8.  
9.     public void OnSelect(GameObject obj)
10.     {
11.         selectedItem.destinationObj = obj;
12.         if (itemsDisplayed.ContainsKey(obj))
13.             selectedItem.destinationItem = itemsDisplayed[obj];
14.        
15.         handler = (InputAction.CallbackContext ctx) => Drop(ctx, obj);
16.  
17.         inputInventory.InventoryUInavigation.Drop.performed += handler;
18.     }
19.     public void OnDeselect(GameObject obj)
20.     {
21.         selectedItem.destinationObj = null;
22.         selectedItem.destinationItem = null;
23.         inputInventory.InventoryUInavigation.Drop.performed -= handler;
24.     }

That's how I solved it.