startup window size sanity check

src/BreCalClient/App.xaml

@@ -2,7 +2,7 @@
              xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
              xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
              xmlns:local="clr-namespace:BreCalClient"
-             StartupUri="MainWindow.xaml" Exit="Application_Exit">
+             StartupUri="MainWindow.xaml" Exit="Application_Exit" Startup="Application_Startup" >
     <Application.Resources>
 
         <ResourceDictionary>

src/BreCalClient/App.xaml.cs

@@ -1,4 +1,5 @@
 using BreCalClient.misc.Model;
+using BreCalClient.Properties;
 using System.Windows;
 
 namespace BreCalClient
@@ -14,5 +15,20 @@ namespace BreCalClient
         {
             BreCalClient.Properties.Settings.Default.Save();
         }
+
+        private void Application_Startup(object sender, StartupEventArgs e)
+        {
+            // Window size sanity check
+            if(Settings.Default.Width == 0)
+            {
+                Settings.Default.Width = 800;
+                Settings.Default.Save();
+            }
+            if(Settings.Default.Height == 0)
+            {
+                Settings.Default.Height = 450;
+                Settings.Default.Save();
+            }
+        }
     }
 }