From 2e8770119281eb2db3444bac87b067fde6b1cb54 Mon Sep 17 00:00:00 2001
From: Matthias Melcher <fltk@matthiasm.com>
Date: Mon, 11 Jan 2010 19:43:27 +0000
Subject: Fl_Preferences::copyTo() would fail if there is no tree root

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@6994 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
---
 src/Fl_Preferences.cxx | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'src')

diff --git a/src/Fl_Preferences.cxx b/src/Fl_Preferences.cxx
index b68c00b4b..147711d3b 100644
--- a/src/Fl_Preferences.cxx
+++ b/src/Fl_Preferences.cxx
@@ -339,6 +339,8 @@ Fl_Preferences::~Fl_Preferences()
  */
 char Fl_Preferences::copyTo(Fl_Tree *tree)
 {
+  if (!tree->root())
+    tree->add(name());
   return node->copyTo(tree, tree->root());
 }
 
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