From 39fd623a309dd09eeac8d2a03e07a5d6c05d1375 Mon Sep 17 00:00:00 2001
From: Tim Hughes <tim@twistedfury.com>
Date: Fri, 21 Mar 2014 11:16:47 +0000
Subject: [PATCH] Also log to OutputDebugString on Windows.

---
 libethereum/Log.cpp | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/libethereum/Log.cpp b/libethereum/Log.cpp
index 0ead148f0..ba88a65ba 100644
--- a/libethereum/Log.cpp
+++ b/libethereum/Log.cpp
@@ -32,9 +32,22 @@ map<type_info const*, bool> eth::g_logOverride;
 
 ThreadLocalLogName eth::t_logThreadName("main");
 
+// foward declare without all of Windows.h
+#ifdef _WIN32
+extern "C" __declspec(dllimport) void __stdcall OutputDebugStringA(const char* lpOutputString);
+#endif
+
 void eth::simpleDebugOut(std::string const& _s, char const*)
 {
 	cout << _s << endl << flush;
+
+	// helpful to use OutputDebugString on windows
+	#ifdef _WIN32
+	{
+		OutputDebugStringA(_s.data());
+		OutputDebugStringA("\n");
+	}
+	#endif
 }
 
 std::function<void(std::string const&, char const*)> eth::g_logPost = simpleDebugOut;