From feea7d4040f180321fe3328ddc1dc0951e9ac39d Mon Sep 17 00:00:00 2001
From: marco-calautti <marco.calautti@gmail.com>
Date: Sun, 13 May 2018 15:15:57 +0200
Subject: [PATCH] Fixed Keyboard not showing second time.

---
 WPFTabTip/TabTipAutomation.cs | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/WPFTabTip/TabTipAutomation.cs b/WPFTabTip/TabTipAutomation.cs
index 857212a..86e2400 100644
--- a/WPFTabTip/TabTipAutomation.cs
+++ b/WPFTabTip/TabTipAutomation.cs
@@ -105,6 +105,16 @@ public static void BindTo<T>() where T : UIElement
                 }),
                 handledEventsToo: true);
 
+            EventManager.RegisterClassHandler(
+                classType: typeof(T),
+                routedEvent: UIElement.PreviewMouseDownEvent,
+                handler: new RoutedEventHandler((s, e) =>
+                {
+                    if (((UIElement)s).IsFocused)
+                        FocusSubject.OnNext(new Tuple<UIElement, bool>((UIElement)s, true));
+                }),
+                handledEventsToo: true);
+
             EventManager.RegisterClassHandler(
                 classType: typeof(T), 
                 routedEvent: UIElement.GotFocusEvent,