From 47d48da4bae33a3fb5f9942bc2d5afeb09e714eb Mon Sep 17 00:00:00 2001
From: Carl Hetherington <cth@carlh.net>
Date: Tue, 5 Feb 2013 19:53:30 +0000
Subject: Try to implement FileWriter::OpenModify on Windows.

---
 asdcplib/src/KM_fileio.cpp | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/asdcplib/src/KM_fileio.cpp b/asdcplib/src/KM_fileio.cpp
index 138bc3b4..d48e7554 100644
--- a/asdcplib/src/KM_fileio.cpp
+++ b/asdcplib/src/KM_fileio.cpp
@@ -831,6 +831,34 @@ Kumu::FileWriter::OpenWrite(const char* filename)
   return Kumu::RESULT_OK;
 }
 
+//
+Kumu::Result_t
+Kumu::FileWriter::OpenModify(const char* filename)
+{
+  KM_TEST_NULL_STR_L(filename);
+  m_Filename = filename;
+  
+  // suppress popup window on error
+  UINT prev = ::SetErrorMode(SEM_FAILCRITICALERRORS|SEM_NOOPENFILEERRORBOX);
+
+  m_Handle = ::CreateFileA(filename,
+			  (GENERIC_WRITE|GENERIC_READ),  // open for reading
+			  FILE_SHARE_READ,               // share for reading
+			  NULL,                          // no security
+			  OPEN_ALWAYS,                   // don't truncate existing
+			  FILE_ATTRIBUTE_NORMAL,         // normal file
+			  NULL                           // no template file
+			  );
+
+  ::SetErrorMode(prev);
+
+  if ( m_Handle == INVALID_HANDLE_VALUE )
+    return Kumu::RESULT_FILEOPEN;
+  
+  m_IOVec = new h__iovec;
+  return Kumu::RESULT_OK;
+}
+
 //
 Kumu::Result_t
 Kumu::FileWriter::Writev(ui32_t* bytes_written)
-- 
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