From 942a3340aae6f71943691beb0ea042d1c2f4d1f0 Mon Sep 17 00:00:00 2001
From: YuSanka <yusanka@gmail.com>
Date: Thu, 14 Jun 2018 23:56:44 +0200
Subject: [PATCH] Added a check for the correctness of the entered characters
 in numerical fields.

---
 xs/src/slic3r/GUI/Field.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/xs/src/slic3r/GUI/Field.cpp b/xs/src/slic3r/GUI/Field.cpp
index acab4f4b6..a50094662 100644
--- a/xs/src/slic3r/GUI/Field.cpp
+++ b/xs/src/slic3r/GUI/Field.cpp
@@ -105,7 +105,11 @@ namespace Slic3r { namespace GUI {
 				break;
 			}
 			double val;
-			str.ToCDouble(&val);
+			if(!str.ToCDouble(&val))
+			{
+				show_error(m_parent, _(L("Input value contains incorrect symbol(s).\nUse, please, only digits")));
+				set_value(double_to_string(val), true);
+			}
 			if (m_opt.min > val || val > m_opt.max)
 			{
 				show_error(m_parent, _(L("Input value is out of range")));