From c1f290542a5939a5c07d71f9584f9a93a2526ca2 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Jean-Philippe=20Bruy=C3=A8re?= <jp_bruyere@hotmail.com>
Date: Wed, 1 Mar 2017 07:00:56 +0100
Subject: [PATCH] restore lock in Visible prop of GO

---
 Tests/Interfaces/Divers/0.crow      |  8 ++++----
 src/GraphicObjects/GraphicObject.cs | 16 +++++++++-------
 2 files changed, 13 insertions(+), 11 deletions(-)

diff --git a/Tests/Interfaces/Divers/0.crow b/Tests/Interfaces/Divers/0.crow
index 480dde3b..15ab65f4 100755
--- a/Tests/Interfaces/Divers/0.crow
+++ b/Tests/Interfaces/Divers/0.crow
@@ -142,13 +142,13 @@
 		</VerticalStack>
 		<Splitter/>
 		<VerticalStack Width="30%" Margin="5">
-			<Border Margin="5" Height="Fit">
+<!--			<Border Margin="5" Height="Fit">
 				<Label Width="Stretched" Margin="1" Text="{../../dv.SelectedItem}"/>
-			</Border>
-			<Border Margin="5" Height="30%">
+			</Border>-->
+<!--			<Border Margin="5" Height="30%">
 				<DirectoryView Name="dv" CurrentDirectory="/" Margin="1"/>
 			</Border>
-			<Splitter/>
+			<Splitter/>-->
 			<ListBox Name="colorList" Data="{TestList}" Margin="5"
 					 ItemTemplate="#Tests.Interfaces.colorItem.crow"
 					 Template="#Crow.Templates.ScrollingListBox.goml"
diff --git a/src/GraphicObjects/GraphicObject.cs b/src/GraphicObjects/GraphicObject.cs
index 059fc568..22bfdea2 100644
--- a/src/GraphicObjects/GraphicObject.cs
+++ b/src/GraphicObjects/GraphicObject.cs
@@ -516,13 +516,15 @@ namespace Crow
 				if (isVisible)
 					RegisterForLayouting (LayoutingType.Sizing);
 				else {
-					Slot.Width = 0;
-					LayoutChanged.Raise (this, new LayoutingEventArgs (LayoutingType.Width));
-					Slot.Height = 0;
-					LayoutChanged.Raise (this, new LayoutingEventArgs (LayoutingType.Height));
-					if (this.parent != null)
-						CurrentInterface.EnqueueForRepaint (this);
-					LastSlots.Width = LastSlots.Height = 0;
+					lock (CurrentInterface.UpdateMutex) {
+						Slot.Width = 0;
+						LayoutChanged.Raise (this, new LayoutingEventArgs (LayoutingType.Width));
+						Slot.Height = 0;
+						LayoutChanged.Raise (this, new LayoutingEventArgs (LayoutingType.Height));
+						if (this.parent != null)
+							CurrentInterface.EnqueueForRepaint (this);
+						LastSlots.Width = LastSlots.Height = 0;
+					}
 				}
 
 				//trigger a mouse to handle possible hover changes
-- 
2.47.3