From f8ccdd0bcf7a3004d743aa7141988d294f727663 Mon Sep 17 00:00:00 2001
From: Mariano Reingart <reingart@gmail.com>
Date: Mon, 29 Sep 2014 02:59:24 +0000
Subject: [PATCH] Fix issues with dashes in wxQT, thanks @seandepagnier

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@77913 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
---
 src/qt/pen.cpp | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/qt/pen.cpp b/src/qt/pen.cpp
index e0313b6d1a..bf265dcd62 100644
--- a/src/qt/pen.cpp
+++ b/src/qt/pen.cpp
@@ -207,6 +207,8 @@ class wxPenRefData: public wxGDIRefData
         {
             m_qtPen.setCapStyle(Qt::RoundCap);
             m_qtPen.setJoinStyle(Qt::RoundJoin);
+            m_dashes = NULL;
+            m_dashesSize = 0;
         }
         
         wxPenRefData()
@@ -307,8 +309,10 @@ void wxPen::SetDashes(int nb_dashes, const wxDash *dash)
     ((wxPenRefData *)m_refData)->m_dashesSize = nb_dashes;
     
     QVector<qreal> dashes;
-    for (int i = 0; i < nb_dashes; i++) {
-        dashes << dash[i];
+    if (dash)
+    {
+        for (int i = 0; i < nb_dashes; i++)
+            dashes << dash[i];
     }
     
     M_PENDATA.setDashPattern(dashes);