From d4c72d5a79fef70e43ded51fa1495f0a18dd7944 Mon Sep 17 00:00:00 2001 From: Chocko Date: Thu, 19 Jul 2018 10:59:07 +0200 Subject: [PATCH] NullReference Issue Workaround --- .../Xceed.Wpf.AvalonDock/Controls/LayoutAnchorableTabItem.cs | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/ExtendedWPFToolkitSolution/Src/Xceed.Wpf.AvalonDock/Controls/LayoutAnchorableTabItem.cs b/ExtendedWPFToolkitSolution/Src/Xceed.Wpf.AvalonDock/Controls/LayoutAnchorableTabItem.cs index 743e0265..9d34c11f 100644 --- a/ExtendedWPFToolkitSolution/Src/Xceed.Wpf.AvalonDock/Controls/LayoutAnchorableTabItem.cs +++ b/ExtendedWPFToolkitSolution/Src/Xceed.Wpf.AvalonDock/Controls/LayoutAnchorableTabItem.cs @@ -181,7 +181,8 @@ namespace Xceed.Wpf.AvalonDock.Controls { base.OnMouseEnter( e ); - if( _draggingItem != this && + if( _draggingItem != null && + _draggingItem != this && e.LeftButton == MouseButtonState.Pressed ) { var model = Model; -- 2.18.0.windows.1