From d4b48cec5d5cd91607657adb17e7ad9c60349bdf Mon Sep 17 00:00:00 2001
From: Thomas Geymayer <tomgey@gmail.com>
Date: Sat, 29 Jun 2013 14:29:38 +0200
Subject: [PATCH] Canvas: clear mousedown/click if mouse leaves canvas.

---
 simgear/canvas/CanvasEventManager.cxx | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/simgear/canvas/CanvasEventManager.cxx b/simgear/canvas/CanvasEventManager.cxx
index 3d14ea56..6a6f7cf2 100644
--- a/simgear/canvas/CanvasEventManager.cxx
+++ b/simgear/canvas/CanvasEventManager.cxx
@@ -112,6 +112,13 @@ namespace canvas
       case Event::MOUSE_LEAVE:
         // Mouse leaves window and therefore also current mouseover element
         handleMove(event, EventPropagationPath());
+
+        // Event is only send if mouse is moved outside the window or dragging
+        // has ended somewhere outside the window. In both cases a mouse button
+        // has been released, so no more mouse down or click...
+        _last_mouse_down.clear();
+        _last_click.clear();
+
         return true;
       case Event::WHEEL:
         break;