From 67d42f9e4f41744991c25c9707da317712f1f3f2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Xoan=20Sampai=C3=B1o?= <xoansampainho@gmail.com>
Date: Mon, 8 May 2017 20:58:11 +0200
Subject: [PATCH] Skip event handling in 3D/Layer preview tab when no UP or
 DOWN key is pressed

  * fixes alexrj/Slic3r#3792
---
 lib/Slic3r/GUI/Plater/2DToolpaths.pm | 2 ++
 lib/Slic3r/GUI/Plater/3DPreview.pm   | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/lib/Slic3r/GUI/Plater/2DToolpaths.pm b/lib/Slic3r/GUI/Plater/2DToolpaths.pm
index c7b3765c07..2c5a4a7d6c 100644
--- a/lib/Slic3r/GUI/Plater/2DToolpaths.pm
+++ b/lib/Slic3r/GUI/Plater/2DToolpaths.pm
@@ -60,6 +60,8 @@ sub new {
         } elsif ($key == 68 || $key == 317) {
             $slider->SetValue($slider->GetValue - 1);
             $self->set_z($self->{layers_z}[$slider->GetValue]);
+        } else {
+            $event->Skip;
         }
     });
     
diff --git a/lib/Slic3r/GUI/Plater/3DPreview.pm b/lib/Slic3r/GUI/Plater/3DPreview.pm
index dddefee013..8fa9188ef0 100644
--- a/lib/Slic3r/GUI/Plater/3DPreview.pm
+++ b/lib/Slic3r/GUI/Plater/3DPreview.pm
@@ -58,6 +58,8 @@ sub new {
         } elsif ($key == 68 || $key == 317) {
             $slider->SetValue($slider->GetValue - 1);
             $self->set_z($self->{layers_z}[$slider->GetValue]);
+        } else {
+            $event->Skip;
         }
     });