# BookerLiu
diff a/MainWindow.xaml b/MainWindow.xaml	(rejected hunks)
@@ -20,6 +20,7 @@
         SizeChanged="Window_SizeChanged"
         KeyDown="OnKeyDown"
         Focusable="True"
+        GotFocus="MainWindow_GotFocus"
         MouseDown="MainWindow_MouseDown"
         >
     <WindowChrome.WindowChrome>