2 files changed, 20 insertions, 12 deletions

diff --git a/src/threading.c b/src/threading.c
index 5a3e64b..3e181ba 100644
--- a/src/threading.c
+++ b/src/threading.c
@@ -248,7 +248,7 @@ static void prepare_timeout( struct timespec *ts, time_d abs_secs ) {
 
 #if THREADAPI == THREADAPI_WINDOWS
 
-#if WINVER <= 0x0400 // Windows NT4: Use Mutexes with Events
+#if _WIN32_WINNT < 0x0600 // CONDITION_VARIABLE aren't available
   //
   void MUTEX_INIT( MUTEX_T *ref ) {
      *ref= CreateMutex( NULL /*security attr*/, FALSE /*not locked*/, NULL );
@@ -270,7 +270,7 @@ static void prepare_timeout( struct timespec *ts, time_d abs_secs ) {
     if (!ReleaseMutex(*ref))
         FAIL( "ReleaseMutex", GetLastError() );
   }
-#endif // Windows NT4
+#endif // CONDITION_VARIABLE aren't available
 
 static int const gs_prio_remap[] =
 {
@@ -384,7 +384,7 @@ bool_t THREAD_WAIT_IMPL( THREAD_T *ref, double secs)
 #endif // !__GNUC__
         }
 
-#if WINVER <= 0x0400 // Windows NT4
+#if _WIN32_WINNT < 0x0600 // CONDITION_VARIABLE aren't available
 
         void SIGNAL_INIT( SIGNAL_T* ref)
         {
@@ -477,7 +477,7 @@ bool_t THREAD_WAIT_IMPL( THREAD_T *ref, double secs)
                         FAIL( "WaitForSingleObject", GetLastError());
         }
 
-#else // Windows Vista and above: condition variables exist, use them
+#else // CONDITION_VARIABLE are available, use them
 
         //
         void SIGNAL_INIT( SIGNAL_T *ref )
@@ -534,7 +534,7 @@ bool_t THREAD_WAIT_IMPL( THREAD_T *ref, double secs)
                 WakeAllConditionVariable( ref);
         }
 
-#endif // Windows Vista and above
+#endif // CONDITION_VARIABLE are available
 
 #else // THREADAPI == THREADAPI_PTHREAD
   // PThread (Linux, OS X, ...)
diff --git a/src/threading.h b/src/threading.h
index 0698355..bfa9ab8 100644
--- a/src/threading.h
+++ b/src/threading.h
@@ -59,25 +59,33 @@ enum e_status { PENDING, RUNNING, WAITING, DONE, ERROR_ST, CANCELLED };
 */
 
 #if THREADAPI == THREADAPI_WINDOWS
-  #if defined ( PLATFORM_XBOX)
+  #if defined( PLATFORM_XBOX)
     #include <xtl.h>
   #else // !PLATFORM_XBOX
     #define WIN32_LEAN_AND_MEAN
-    // 'SignalObjectAndWait' needs this (targets Windows 2000 and above)
-    #ifndef _WIN32_WINNT // already defined by TDSM-Mingw64, so avoid a warning in that case
-    #define _WIN32_WINNT 0x0400
+    // CONDITION_VARIABLE needs version 0x0600+
+    // _WIN32_WINNT value is already defined by MinGW, but not by MSVC
+    #ifndef _WIN32_WINNT
+    #define _WIN32_WINNT 0x0600
     #endif // _WIN32_WINNT
     #include <windows.h>
   #endif // !PLATFORM_XBOX
   #include <process.h>
 
+/*
+#define XSTR(x) STR(x)
+#define STR(x) #x
+#pragma message( "The value of _WIN32_WINNT: " XSTR(_WIN32_WINNT))
+*/
+
   // MSDN: http://msdn2.microsoft.com/en-us/library/ms684254.aspx
   //
   // CRITICAL_SECTION can be used for simple code protection. Mutexes are
   // needed for use with the SIGNAL system.
   //
 
-        #if WINVER <= 0x0400 // Windows NT4: use a signal
+        #if _WIN32_WINNT < 0x0600 // CONDITION_VARIABLE aren't available, use a signal
+
         typedef struct
         {
                 CRITICAL_SECTION    signalCS;
@@ -94,7 +102,7 @@ enum e_status { PENDING, RUNNING, WAITING, DONE, ERROR_ST, CANCELLED };
         void MUTEX_LOCK( MUTEX_T* ref);
         void MUTEX_UNLOCK( MUTEX_T* ref);
 
-        #else // Vista and above: use a condition variable
+        #else // CONDITION_VARIABLE are available, use them
 
         #define SIGNAL_T CONDITION_VARIABLE
         #define MUTEX_T CRITICAL_SECTION
@@ -103,7 +111,7 @@ enum e_status { PENDING, RUNNING, WAITING, DONE, ERROR_ST, CANCELLED };
         #define MUTEX_LOCK( ref) EnterCriticalSection( ref)
         #define MUTEX_UNLOCK( ref) LeaveCriticalSection( ref)
 
-        #endif // // Vista and above
+        #endif // CONDITION_VARIABLE are available
 
   #define MUTEX_RECURSIVE_INIT(ref)  MUTEX_INIT(ref)  /* always recursive in Win32 */