From ebffeb8edd9457dd7907846f0edc76964d2065f5 Mon Sep 17 00:00:00 2001
From: Manolo Gouy <Manolo>
Date: Sun, 15 Nov 2015 10:45:59 +0000
Subject: Mac OS: Added necessary check because a non-FLTK window can be found
 as child of an FLTK window when turning a window full-screen.

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@10909 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
---
 src/Fl_cocoa.mm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Fl_cocoa.mm b/src/Fl_cocoa.mm
index b021de133..f1157a551 100644
--- a/src/Fl_cocoa.mm
+++ b/src/Fl_cocoa.mm
@@ -715,7 +715,7 @@ void Fl::remove_timeout(Fl_Timeout_Handler cb, void* data)
   NSEnumerator *enumerator = [[self childWindows] objectEnumerator];
   id child;
   while ((child = [enumerator nextObject]) != nil) {
-    [child recursivelySendToSubwindows:sel];
+    if ([child isKindOfClass:[FLWindow class]]) [child recursivelySendToSubwindows:sel];
   }
 }
 
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