From d01ff3864fd2fc0e865571a283a05f156fb77774 Mon Sep 17 00:00:00 2001
From: Manolo Gouy <Manolo>
Date: Tue, 8 Mar 2016 05:18:28 +0000
Subject: [PATCH] With X11 + Xdbe, deallocate the Fl_Double_Window's back
 buffer at window close.

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@11312 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
---
 src/Fl_Double_Window.cxx | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/Fl_Double_Window.cxx b/src/Fl_Double_Window.cxx
index 83af44b62..7a96f8256 100644
--- a/src/Fl_Double_Window.cxx
+++ b/src/Fl_Double_Window.cxx
@@ -506,7 +506,10 @@ void Fl_Double_Window::hide() {
   Fl_X* myi = Fl_X::i(this);
   if (myi && myi->other_xid) {
 #if USE_XDBE
-    if (!use_xdbe)
+    if (use_xdbe) {
+      XdbeDeallocateBackBufferName(fl_display, myi->other_xid);
+    }
+    else
 #endif
       fl_delete_offscreen(myi->other_xid);
   }