GUI DragWindow only working for a single window.

Goal: To have draggable windows that only drag when a specific region of the window has been clicked.

Issue: When multiple windows are on the scene, only the first one to be moved will be able to move until control has left the unity debugger.

Code:

 using UnityEngine;
 using System.Collections;
 
 public class Window : MonoBehaviour 
 {
     private static int windowsCreated = 0;
     
     public Rect ClientRect;
     public GUIContent Content;
     public GUISkin Skin;
     private int ID;
     private bool canDrag = false;
     private Rect bounds = new Rect(0, 0, 100, 18);
     
     void Start()
     {
         ID = ++windowsCreated;
     }
     
     void OnGUI()
     {
         ClientRect = GUI.Window(ID, ClientRect, Draw, Content, Skin.window);
     }
     
     
     void Draw(int id)
     {
         if(bounds.Contains(Event.current.mousePosition))
         {
             if(Input.GetMouseButton(0))
             {
                 canDrag = true;
             }
         }
         if(Input.GetMouseButton(0) == false)
         {
             canDrag = false;
         }
         
         if(canDrag) GUI.DragWindow();
     }
 }

Steps to reproduce: - Create an empty game object.

• Attach the script from the code snippet written above.

• Repeat steps 1 and 2 until you have created the desired number of windows (3 windows is preferred for this test).

• Create a default GUISkin and attach it to the scripts.

• Run the debugger.

• Click the upper region of a window and drag it.

• Attempt to do the same for the other windows.

• Click outside of the focus of the UnityDebugger.

• Click inside the UnityDebugger, on a different window and drag.

Attempted Solutions:

• Rewriting the script.

• Writing logs to verify that the bools are being set, and that the mouse is in collidable bounds.

• Black magic.

If anyone has any ideas on why this could be happening, or know of a solution, it would be greatly appreciated if you could post your thoughts.

Kind Regards,

Tyler R. Kendrick