From 14d68de6614cff9ee4ff1ffafa572a36f0eccad3 Mon Sep 17 00:00:00 2001
From: vsv <vsv@opencascade.com>
Date: Wed, 9 Jan 2019 17:34:25 +0300
Subject: [PATCH] Fix possible exception in case if deflection parameter is not
 defined in preferences

---
 src/XGUI/XGUI_Displayer.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/XGUI/XGUI_Displayer.cpp b/src/XGUI/XGUI_Displayer.cpp
index 6c54faa53..8eb1c1261 100644
--- a/src/XGUI/XGUI_Displayer.cpp
+++ b/src/XGUI/XGUI_Displayer.cpp
@@ -38,6 +38,7 @@
 #include <ModelAPI_Tools.h>
 #include <ModelAPI_AttributeIntArray.h>
 #include <ModelAPI_ResultBody.h>
+#include <ModelAPI_ResultConstruction.h>
 
 #include <ModuleBase_BRepOwner.h>
 #include <ModuleBase_IModule.h>
@@ -697,7 +698,10 @@ Handle(AIS_InteractiveContext) XGUI_Displayer::AISContext() const
 
     ModuleBase_IViewer::DefaultHighlightDrawer = aContext->HighlightStyle();
     Handle(Prs3d_Drawer) aSelStyle = aContext->SelectionStyle();
-    double aDeflection = Config_PropManager::real("Visualization", "construction_deflection");
+    double aDeflection = QString(ModelAPI_ResultConstruction::DEFAULT_DEFLECTION().c_str()).toDouble();
+    try {
+      aDeflection = Config_PropManager::real("Visualization", "construction_deflection");
+    } catch (...) {}
 
     ModuleBase_IViewer::DefaultHighlightDrawer->SetDeviationCoefficient(aDeflection);
     aSelStyle->SetDeviationCoefficient(aDeflection);
-- 
2.39.2