Minor feature update

EDSEditorGUI/ChangeMappingWidth.cs

@@ -0,0 +1,69 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Data;
+using System.Drawing;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+
+namespace ODEditor
+{
+    /// <summary>
+    /// A small dialog for PDO mapping width adjustments
+    /// </summary>
+    public partial class ChangeMappingWidth : Form
+    {
+        public int selected_width = 1;
+        private int default_width = 1;
+
+        public ChangeMappingWidth(int current_width, int max_width)
+        {
+            InitializeComponent();
+            // Validate params
+            if (current_width < 1)
+                current_width = 1;
+            if (max_width < 1)
+                max_width = 1;
+            if (current_width > max_width)
+                current_width = max_width;
+            updown_newwidth.Maximum = max_width;
+            updown_newwidth.Value = current_width;
+            selected_width = current_width;
+            default_width = current_width;
+        }
+
+        private void button_ok_Click(object sender, EventArgs e)
+        {
+            selected_width = (int)updown_newwidth.Value;
+            if (selected_width != default_width)
+            {
+                this.DialogResult = DialogResult.OK;
+            }
+            else
+            {
+                this.DialogResult = DialogResult.Cancel;
+            }
+            this.Close();
+        }
+
+        private void button_cancel_Click(object sender, EventArgs e)
+        {
+            this.DialogResult = DialogResult.Cancel;
+            this.Close();
+        }
+
+        private void ChangeMappingWidth_KeyDown(object sender, KeyEventArgs e)
+        {
+            if (e.KeyCode == Keys.Enter)
+            {
+                this.button_ok_Click(null, null);
+            }
+            else if (e.KeyCode == Keys.Escape)
+            {
+                this.button_cancel_Click(null, null);
+            }
+        }
+    }
+}

EDSEditorGUI/ChangeMappingWidth.resx

@@ -0,0 +1,145 @@
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