Catching Control key being pressed while using EventSystem OnDrag()

Hey all I've searched the web and I just can't figure out how I can catch when the user holds down the control key and starts dragging an object that's in my inventory.

I can catch the OnDrag just fine but the event system doesn't seem to recognize Input.OnKeyDown(Keycode.LeftControl)) at the same time.

here is what I have

Code (csharp):

1. public void OnDrag(PointerEventData eventData)
2.     {
3.         if (eventData.button == PointerEventData.InputButton.Left && UniqueID != "") //Starts a Drag & Drop action if allowed to
4.         {
5.             //if (EventSystem.current. == KeyCode.LeftControl || e.keyCode == KeyCode.RightControl)
6.             //{
7.             //    Debug.Log("Dragging one off the stack!");
8.             //    return;
9.             //}
10.  
11.             //Debug.Log("Dragging");
12.             InventorySlotsManager.Instance.IsDragging = true;
13.  
14.             // Copy Items in Socket to dragging container
15.             InventorySlotsManager.Instance.DraggedItemImageContainer.GetComponent<DraggedItemScript>().DraggedItemUniqueID = UniqueID;
16.             InventorySlotsManager.Instance.DraggedItemImageContainer.GetComponent<DraggedItemScript>().DraggedItemQuantity = itemQuantityContainer.text;
17.             InventorySlotsManager.Instance.DraggedItemImageContainer.GetComponent<Image>().sprite = iconImageContainer.sprite;
18.  
19.             // clear the slot fields
20.             UniqueID = "";
21.             iconImageContainer.sprite = EmptyItem;
22.             itemQuantityContainer.text = "";
23.  
24.             // Make the Dragged Container visible
25.             InventorySlotsManager.Instance.DraggedItemImageContainer.SetActive(true);
26.  
27.             // make the Tooltip Visible
28.             InventorySlotsManager.Instance.Tooltip.SetActive(false);
29.         }
30.     }

This works great to drag everything int he selected inventory slot but I need to tell when the control Key is held down while they drag so that I can separate stacked items and drag one item from the stack out of the slot.

Any help is appreciated.

 

After reviewing the system it will will not act the way I want it too. Don't know why I thought it was working but apparently it still won't recognize when the key is hit.

 

check for the key up and down events in Update and use it to set a boolean that you use i the ondrag event

 

I tried that it didn't work, I setup a public boolean that chacked for the control keys being prressed in my Inventory Manager script's Update function. When pressed it sets a boolean IsControl = true, if not it sets it to false.

Since this script is a singleton class I can call any public functions and variables from it using InventoryManagerScript.Instance.IsControl

but when I am in the OnDrag event it seems to show this as false even when I know it should be true.

 

Found my issue, I used GetKeyDown should have just Used GetKey