From f251df7e36d7549526635072963320fe8d46503b Mon Sep 17 00:00:00 2001
From: Charles Milette <me@charlesmilette.net>
Date: Sun, 29 Apr 2018 14:23:20 -0400
Subject: [PATCH] Fix crash when opening screen capture form

---
 ShareX.HelpersLib/Helpers/Helpers.cs | 31 ++++++++++++++++++++--------
 1 file changed, 22 insertions(+), 9 deletions(-)

diff --git a/ShareX.HelpersLib/Helpers/Helpers.cs b/ShareX.HelpersLib/Helpers/Helpers.cs
index 64a205c51..d8b10699c 100644
--- a/ShareX.HelpersLib/Helpers/Helpers.cs
+++ b/ShareX.HelpersLib/Helpers/Helpers.cs
@@ -24,7 +24,6 @@ You should have received a copy of the GNU General Public License
 #endregion License Information (GPL v3)
 
 using Microsoft.Win32;
-using Newtonsoft.Json.Linq;
 using ShareX.HelpersLib.Properties;
 using System;
 using System.Collections.Generic;
@@ -42,6 +41,7 @@ You should have received a copy of the GNU General Public License
 using System.Runtime.Serialization;
 using System.Runtime.Serialization.Formatters.Binary;
 using System.Security.Cryptography;
+using System.Security.Permissions;
 using System.Security.Principal;
 using System.Text;
 using System.Text.RegularExpressions;
@@ -69,13 +69,25 @@ public static class Helpers
 
         public static readonly Version OSVersion = Environment.OSVersion.Version;
 
-        public static Cursor[] CursorList = new Cursor[] {
-            Cursors.AppStarting, Cursors.Arrow, Cursors.Cross, Cursors.Default, Cursors.Hand, Cursors.Help,
-            Cursors.HSplit, Cursors.IBeam, Cursors.No, Cursors.NoMove2D, Cursors.NoMoveHoriz, Cursors.NoMoveVert,
-            Cursors.PanEast, Cursors.PanNE, Cursors.PanNorth, Cursors.PanNW, Cursors.PanSE, Cursors.PanSouth,
-            Cursors.PanSW, Cursors.PanWest, Cursors.SizeAll, Cursors.SizeNESW, Cursors.SizeNS, Cursors.SizeNWSE,
-            Cursors.SizeWE, Cursors.UpArrow, Cursors.VSplit, Cursors.WaitCursor
-        };
+        private static Cursor[] _cursorList;
+        public static Cursor[] CursorList
+        {
+            get
+            {
+                if (_cursorList == null)
+                {
+                    _cursorList = new Cursor[] {
+                        Cursors.AppStarting, Cursors.Arrow, Cursors.Cross, Cursors.Default, Cursors.Hand, Cursors.Help,
+                        Cursors.HSplit, Cursors.IBeam, Cursors.No, Cursors.NoMove2D, Cursors.NoMoveHoriz, Cursors.NoMoveVert,
+                        Cursors.PanEast, Cursors.PanNE, Cursors.PanNorth, Cursors.PanNW, Cursors.PanSE, Cursors.PanSouth,
+                        Cursors.PanSW, Cursors.PanWest, Cursors.SizeAll, Cursors.SizeNESW, Cursors.SizeNS, Cursors.SizeNWSE,
+                        Cursors.SizeWE, Cursors.UpArrow, Cursors.VSplit, Cursors.WaitCursor
+                    };
+                }
+
+                return _cursorList;
+            }
+        }
 
         /// <summary>Get file name extension without dot.</summary>
         public static string GetFilenameExtension(string filePath)
@@ -1268,13 +1280,14 @@ public static string NumberToLetters(int num)
             return result;
         }
 
+        [ReflectionPermission(SecurityAction.Assert, MemberAccess = true)]
         public static bool TryFixHandCursor()
         {
             try
             {
                 // https://referencesource.microsoft.com/#System.Windows.Forms/winforms/Managed/System/WinForms/Cursors.cs,423
                 typeof(Cursors).GetField("hand", BindingFlags.NonPublic | BindingFlags.Static)
-                    ?.SetValue(null, new Cursor(NativeMethods.LoadCursor(IntPtr.Zero, NativeConstants.IDC_HAND)));
+                    .SetValue(null, new Cursor(NativeMethods.LoadCursor(IntPtr.Zero, NativeConstants.IDC_HAND)));
 
                 return true;
             }