From 3ce564a87dde90c2860e3b9855de95654ed63cfe Mon Sep 17 00:00:00 2001
From: YuSanka <yusanka@gmail.com>
Date: Fri, 23 Aug 2019 15:32:47 +0200
Subject: [PATCH] Fixed assert on Linux

---
 src/slic3r/GUI/Field.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/slic3r/GUI/Field.cpp b/src/slic3r/GUI/Field.cpp
index 2bee0018c9e..97a32e74129 100644
--- a/src/slic3r/GUI/Field.cpp
+++ b/src/slic3r/GUI/Field.cpp
@@ -1056,6 +1056,7 @@ void ColourPicker::set_undef_value(wxColourPickerCtrl* field)
     wxButton* btn = dynamic_cast<wxButton*>(field->GetPickerCtrl());
     wxBitmap bmp = btn->GetBitmap();
     wxMemoryDC dc(bmp);
+    if (!dc.IsOk()) return;
     dc.SetTextForeground(*wxWHITE);
     dc.SetFont(wxGetApp().normal_font());