From 25dd0f25fcd75ed878561d511ce418a3c386c2a5 Mon Sep 17 00:00:00 2001
From: Laurent Rineau <Laurent.Rineau__CGAL@normalesup.org>
Date: Tue, 28 Oct 2008 17:40:51 +0000
Subject: [PATCH] Fix bug when one open a series of surfaces.

---
 .../demo/Surface_mesher/qt4-demo/mainwindow.cpp           | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/Surface_mesher/demo/Surface_mesher/qt4-demo/mainwindow.cpp b/Surface_mesher/demo/Surface_mesher/qt4-demo/mainwindow.cpp
index ecaabd3303a..ffa1aaec7aa 100644
--- a/Surface_mesher/demo/Surface_mesher/qt4-demo/mainwindow.cpp
+++ b/Surface_mesher/demo/Surface_mesher/qt4-demo/mainwindow.cpp
@@ -30,7 +30,8 @@
 MainWindow::MainWindow(MainWindow* other_window /* = 0 */) : 
   CGAL::Qt::DemosMainWindow(),
   sharp_edges_angle_lower_bound(60.),
-  sharp_edges_angle_upper_bound(180.)
+  sharp_edges_angle_upper_bound(180.),
+  surface(0)
 {
   setupUi(this);
   setAcceptDrops(true);
@@ -68,6 +69,10 @@ void MainWindow::dropEvent(QDropEvent *event)
 
 void MainWindow::surface_open(const QString& filename)
 {
+  if(surface != 0) {
+    delete surface;
+    surface = 0;
+  }
 #ifndef CGAL_DO_NOT_USE_POLYHEDRAL_SURFACE
   surface = new Polyhedral_surface(this);
   if(surface->open(filename)) {
@@ -75,6 +80,7 @@ void MainWindow::surface_open(const QString& filename)
     return;
   }
   delete surface;
+  surface = 0;
 #endif
   surface = new Volume(this);
   if(surface->open(filename)) {