From 1c9c557162bbc4b38a7ff3e87e57f836bc927685 Mon Sep 17 00:00:00 2001
From: Jaakko Salli <jaakko.salli@dnainternet.net>
Date: Mon, 12 Jan 2009 17:27:53 +0000
Subject: [PATCH] Let wxVariantDataDateTime::Write() and Read() work with
 invalid dates (otherwise wxVariant::GetString() will assert when value is an
 invalid wxDateTime)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_8_BRANCH@58054 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
---
 src/common/variant.cpp | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/src/common/variant.cpp b/src/common/variant.cpp
index b2702591f2..64bf1fe575 100644
--- a/src/common/variant.cpp
+++ b/src/common/variant.cpp
@@ -1223,7 +1223,11 @@ bool wxVariantDataDateTime::Write(wxSTD ostream& str) const
 
 bool wxVariantDataDateTime::Write(wxString& str) const
 {
-    str = m_value.Format();
+    if ( m_value.IsValid() )
+        str = m_value.Format();
+    else
+        str = wxT("Invalid");
+
     return true;
 }
 
@@ -1239,6 +1243,12 @@ bool wxVariantDataDateTime::Read(wxSTD istream& WXUNUSED(str))
 
 bool wxVariantDataDateTime::Read(wxString& str)
 {
+    if ( str == wxT("Invalid") )
+    {
+        m_value = wxInvalidDateTime;
+        return true;
+    }
+
     if(! m_value.ParseDateTime(str))
         return false;
     return true;