Little improvements to MessageWindow interface

inabox.wpf/Forms/MessageWindow.xaml.cs

@@ -206,11 +206,11 @@ public partial class MessageWindow : Window, INotifyPropertyChanged
 
     #region Static Constructors
 
-    public static readonly BitmapImage _warning = InABox.Wpf.Resources.warning.AsBitmapImage();
+    private static readonly BitmapImage _warning = InABox.Wpf.Resources.warning.AsBitmapImage();
 
     public static BitmapImage WarningImage => _warning;
 
-    public static readonly BitmapImage _question = InABox.Wpf.Resources.help.AsBitmapImage();
+    private static readonly BitmapImage _question = InABox.Wpf.Resources.help.AsBitmapImage();
 
     public static BitmapImage QuestionImage => _question;
 
@@ -232,6 +232,15 @@ public partial class MessageWindow : Window, INotifyPropertyChanged
         NewMessage(message, title, image).Display();
     }
 
+    public static MessageWindow NewWarn(string message, string title = "Warning", ImageSource? image = null)
+    {
+        return NewMessage(message, title, image);
+    }
+    public static void Warn(string message, string title = "Warning", ImageSource? image = null)
+    {
+        NewMessage(message, title, image).Display();
+    }
+
     public static MessageWindow NewOKCancel(string message, string title, ImageSource? image = null)
     {
         return new MessageWindow()