From 36933614220f4751a65ee0d299b4e5517cc012e9 Mon Sep 17 00:00:00 2001
From: vro <vro@opencascade.com>
Date: Tue, 17 Dec 2013 12:27:29 +0400
Subject: [PATCH] 0024166: Unable to create file with "Save" menu of voxeldemo
 Qt sample Turning on the light to display the shapes of the sample.

---
 samples/qt/VoxelDemo/src/Viewer.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/samples/qt/VoxelDemo/src/Viewer.cpp b/samples/qt/VoxelDemo/src/Viewer.cpp
index 9d4d20a1e6..f4615df138 100644
--- a/samples/qt/VoxelDemo/src/Viewer.cpp
+++ b/samples/qt/VoxelDemo/src/Viewer.cpp
@@ -15,6 +15,8 @@
 #include <Aspect_DisplayConnection.hxx>
 #include <Graphic3d.hxx>
 #include <OpenGl_GraphicDriver.hxx>
+#include <V3d_DirectionalLight.hxx>
+#include <V3d_AmbientLight.hxx>
 
 static Handle(Graphic3d_GraphicDriver) Viewer_aGraphicDriver;
 
@@ -72,6 +74,9 @@ Viewer::Viewer(QWidget* parent):QWidget(parent)
 	setFocusPolicy( Qt::StrongFocus );
 	setAttribute( Qt::WA_PaintOnScreen );
 	setAttribute( Qt::WA_NoSystemBackground );
+
+    aViewer->SetLightOn(new V3d_DirectionalLight(aViewer, V3d_XnegYnegZneg, Quantity_NOC_WHITE, Standard_True));
+    aViewer->SetLightOn(new V3d_AmbientLight(aViewer, Quantity_NOC_WHITE));
 }
 
 Viewer::~Viewer()