From d4ef5bc16a9cc871d5b4f77280f519b7d924700f Mon Sep 17 00:00:00 2001
From: klchang <chang87420@126.com>
Date: Fri, 13 Oct 2017 20:05:55 +0800
Subject: [PATCH] fix the possible bug for key mapping in Linux GTK library

---
 modules/highgui/src/window_gtk.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/modules/highgui/src/window_gtk.cpp b/modules/highgui/src/window_gtk.cpp
index 91a59d2288..94337d27e9 100644
--- a/modules/highgui/src/window_gtk.cpp
+++ b/modules/highgui/src/window_gtk.cpp
@@ -1632,7 +1632,7 @@ static gboolean icvOnKeyPress(GtkWidget* widget, GdkEventKey* event, gpointer us
         break;
     case GDK_Return:
     case GDK_Linefeed:
-        code = '\n';
+        code = 13;
         break;
     case GDK_Tab:
         code = '\t';