fix the possible bug for key mapping in Linux GTK library

klchang · klchang · commit d4ef5bc16a9c · 2017-10-13T20:05:55.000+08:00
diff --git 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';
