This should fix most icon scaling issues

Improved the IniReader a bit and replaced some old code.

GreenshotPlugin/Core/HResultExtensions.cs

@@ -0,0 +1,65 @@
+// Greenshot - a free and open source screenshot tool
+// Copyright (C) 2007-2020 Thomas Braun, Jens Klingen, Robin Krom
+//
+// For more information see: http://getgreenshot.org/
+// The Greenshot project is hosted on GitHub https://github.com/greenshot/greenshot
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 1 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+using GreenshotPlugin.Core.Enums;
+using System.Diagnostics.Contracts;
+using System.Runtime.InteropServices;
+
+namespace GreenshotPlugin.Core
+{
+    /// <summary>
+    ///     Extensions to handle the HResult
+    /// </summary>
+    public static class HResultExtensions
+    {
+        /// <summary>
+        ///     Test if the HResult respresents a fail
+        /// </summary>
+        /// <param name="hResult">HResult</param>
+        /// <returns>bool</returns>
+        [Pure]
+        public static bool Failed(this HResult hResult)
+        {
+            return hResult < 0;
+        }
+
+        /// <summary>
+        ///     Test if the HResult respresents a success
+        /// </summary>
+        /// <param name="hResult">HResult</param>
+        /// <returns>bool</returns>
+        [Pure]
+        public static bool Succeeded(this HResult hResult)
+        {
+            return hResult >= HResult.S_OK;
+        }
+
+        /// <summary>
+        ///     Throw an exception on Failure
+        /// </summary>
+        /// <param name="hResult">HResult</param>
+        public static void ThrowOnFailure(this HResult hResult)
+        {
+            if (hResult.Failed())
+            {
+                throw Marshal.GetExceptionForHR((int)hResult);
+            }
+        }
+    }
+}