Index: src/chext/TLogger.h
===================================================================
diff -u -N -rb79aca0d66b1084f230022efe39cc89307482e6d -r3d1de44762647618faf9b5b3a87f89b293899d8d
--- src/chext/TLogger.h	(.../TLogger.h)	(revision b79aca0d66b1084f230022efe39cc89307482e6d)
+++ src/chext/TLogger.h	(.../TLogger.h)	(revision 3d1de44762647618faf9b5b3a87f89b293899d8d)
@@ -22,6 +22,8 @@
 #include <boost/log/sources/global_logger_storage.hpp>
 #include <boost/log/sources/severity_logger.hpp>
 #include <boost/log/trivial.hpp>
+#include <boost/log/attributes/named_scope.hpp>
+#include "HResultFormatter.h"
 
 // ugly way to include severity_level in the global namespace
 using namespace boost::log::trivial;
@@ -30,4 +32,38 @@
 
 BOOST_LOG_GLOBAL_LOGGER(Logger, TLogger)
 
+// logging helpers
+namespace details
+{
+	constexpr severity_level HRESULT2Severity(HRESULT hResult)
+	{
+		return (SUCCEEDED(hResult)) ? debug : error;
+	}
+}
+
+#define BOOST_LOG_HRESULT(lg, hr)\
+	BOOST_LOG_SEV(lg, details::HRESULT2Severity(hr)) << L" <" << HResultFormatter::FormatHResult(hr) << L"> "
+
+#define LOG_PARAM(param)\
+	#param << "=" << param
+
+#define LOG_PARAMS2(a1, a2)\
+	LOG_PARAM(a1) << ", " << LOG_PARAM(a2)
+#define LOG_PARAMS3(a1, a2, a3)\
+	LOG_PARAMS2(a1, a2) << ", " << LOG_PARAM(a3)
+#define LOG_PARAMS4(a1, a2, a3, a4)\
+	LOG_PARAMS3(a1, a2, a3) << ", " << LOG_PARAM(a4)
+#define LOG_PARAMS5(a1, a2, a3, a4, a5)\
+	LOG_PARAMS4(a1, a2, a3, a4) << ", " << LOG_PARAM(a5)
+#define LOG_PARAMS6(a1, a2, a3, a4, a5, a6)\
+	LOG_PARAMS5(a1, a2, a3, a4, a5) << ", " << LOG_PARAM(a6)
+#define LOG_PARAMS7(a1, a2, a3, a4, a5, a6, a7)\
+	LOG_PARAMS6(a1, a2, a3, a4, a5, a6) << ", " << LOG_PARAM(a7)
+#define LOG_PARAMS8(a1, a2, a3, a4, a5, a6, a7, a8)\
+	LOG_PARAMS7(a1, a2, a3, a4, a5, a6, a7) << ", " << LOG_PARAM(a8)
+#define LOG_PARAMS9(a1, a2, a3, a4, a5, a6, a7, a8, a9)\
+	LOG_PARAMS8(a1, a2, a3, a4, a5, a6, a7, a8) << ", " << LOG_PARAM(a9)
+#define LOG_PARAMS10(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10)\
+	LOG_PARAMS9(a1, a2, a3, a4, a5, a6, a7, a8, a9) << ", " << LOG_PARAM(a10)
+
 #endif