diff --git a/src/Draw/Draw_BasicCommands.cxx b/src/Draw/Draw_BasicCommands.cxx
index 2984977dff..cc9d4099cf 100755
--- a/src/Draw/Draw_BasicCommands.cxx
+++ b/src/Draw/Draw_BasicCommands.cxx
@@ -58,6 +58,7 @@ static clock_t MDTV_CPU_CURRENT; // cpu time already used at last
 
 #include <Draw_Chronometer.hxx>
 #include <OSD_MAllocHook.hxx>
+#include <OSD_Chronometer.hxx>
 
 #if defined (__hpux) || defined ( HPUX )
 #define RLIM_INFINITY   0x7fffffff
@@ -208,6 +209,31 @@ static Standard_Integer Draw_wait(Draw_Interpretor& , Standard_Integer n, const
   return 0;
 }
 
+//=======================================================================
+//function : cpulimit
+//purpose  : 
+//=======================================================================
+#ifdef WNT
+static unsigned int __stdcall CpuFunc (void * param)
+{
+  clock_t aCurrent;
+  while (1)
+  {
+    Sleep (5);
+    Standard_Real anUserSeconds, aSystemSeconds;
+    OSD_Chronometer::GetProcessCPU (anUserSeconds, aSystemSeconds);
+    aCurrent = clock_t(anUserSeconds + aSystemSeconds);
+    
+    if ((aCurrent - MDTV_CPU_CURRENT) >= MDTV_CPU_LIMIT)
+    {
+      printf ("CpuFunc : Fin sur Cpu Limit \n");
+      ExitProcess (2);
+      return 0;
+    }
+  }
+  return 0;
+}
+#endif
 
 static Standard_Integer cpulimit(Draw_Interpretor& di, Standard_Integer n, const char** a)
 {
@@ -226,25 +252,27 @@ static Standard_Integer cpulimit(Draw_Interpretor& di, Standard_Integer n, const
 
 #else
 //WNT
-  static int first=1;
-/*
-  unsigned int __stdcall CpuFunc(void * );
-  unsigned ThreadID;
+  static int aFirst = 1;
 
-  if (n <= 1) MDTV_CPU_LIMIT = RLIM_INFINITY;
-  else {
-  
-          MDTV_CPU_LIMIT = atoi(a[1]);
-          MDTV_CPU_CURRENT = clock()/1000;
+  unsigned int __stdcall CpuFunc (void *);
+  unsigned aThreadID;
 
-          if (first) // Launch the thread only at the 1st call.
-          {
-                  first=0 ;
-                  _beginthreadex(NULL,0,CpuFunc,NULL,0,&ThreadID);
-          }
+  if (n <= 1)
+    MDTV_CPU_LIMIT = RLIM_INFINITY;
+  else
+  {
+    MDTV_CPU_LIMIT = atoi (a[1]);
+    Standard_Real anUserSeconds, aSystemSeconds;
+    OSD_Chronometer::GetProcessCPU (anUserSeconds, aSystemSeconds);
+    MDTV_CPU_CURRENT = clock_t(anUserSeconds + aSystemSeconds);
+
+    if (aFirst) // Launch the thread only at the 1st call.
+    {
+      aFirst = 0;
+      _beginthreadex (NULL, 0, CpuFunc, NULL, 0, &aThreadID);
+    }
   }
 
-*/
 #endif
 
   return 0;
diff --git a/src/SWDRAW/FILES b/src/SWDRAW/FILES
deleted file mode 100755
index c8575978a6..0000000000
--- a/src/SWDRAW/FILES
+++ /dev/null
@@ -1 +0,0 @@
-cpulimit.pc
diff --git a/src/SWDRAW/SWDRAW.cxx b/src/SWDRAW/SWDRAW.cxx
index 87981f5a24..b380bc5203 100755
--- a/src/SWDRAW/SWDRAW.cxx
+++ b/src/SWDRAW/SWDRAW.cxx
@@ -36,25 +36,6 @@
 
 static int dejadraw = 0;
 
-//=======================================================================
-//function : cpulimit (WNT)
-//purpose  : 
-//=======================================================================
-
-#ifdef WNT
-#include "cpulimit.pc"
-
-static Standard_Integer cpulimit_draw(Draw_Interpretor& di, Standard_Integer n, const char** a)
-{
-  if (n < 2) { di<<"Give a value"<<"\n"; return 1; }
-  int nn = atoi(a[1]);
-  di<<"LIMIT ELASPED TIME = "<<nn<<" seconds"<<"\n";
-  limitelapsed(nn);
-
-  return 0;
-}
-#endif
-
 //#72 rln 09.03.99 Packaging of SWDRAW
 
 //=======================================================================
@@ -210,10 +191,6 @@ void  SWDRAW::Init (Draw_Interpretor& theCommands)
   SWDRAW_ShapeProcess::InitCommands (theCommands);
   SWDRAW_ShapeProcessAPI::InitCommands (theCommands);
 
-#ifdef WNT
-  theCommands.Add("limitelapsed", "nn seconds",__FILE__, cpulimit_draw, "essai");
-#endif
-
   // locations
   theCommands.Add("LocSet", "a [b [c]]: set loc b->a; use no args to get help",__FILE__,LocSet,"essai");
   theCommands.Add("LocDump", "a: dump location of a",__FILE__,LocDump,"essai");
diff --git a/src/SWDRAW/cpulimit.pc b/src/SWDRAW/cpulimit.pc
deleted file mode 100755
index 5867615c6e..0000000000
--- a/src/SWDRAW/cpulimit.pc
+++ /dev/null
@@ -1,59 +0,0 @@
-#ifdef WNT
-
-#include <windows.h>
-#include <winbase.h>
-#include <process.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <time.h>
-
-static clock_t MDTV_CPU_LIMIT;   // Cpu_limit in Sec.
-static clock_t MDTV_CPU_CURRENT; // cpu time already used at last
-                                 // cpulimit call. (sec.) 
-
-
-static unsigned int __stdcall CpuFunc(void * param) {  
-
-	clock_t current;
-
-    while ( 1 ) {
-		Sleep(5);
-	    
-		current = clock()/1000;
-        if ((current-MDTV_CPU_CURRENT) >= MDTV_CPU_LIMIT ){ 
-   		  
-			printf("CpuFunc : Fin sur Cpu Limit \n");
-            ExitProcess(2);
-			return(0);
-		}
-	}
-	return(0);
-} 
-
-//static Standard_Integer cpulimit(Draw_Interpretor& DI, Standard_Integer n, char** a)
-void limitelapsed(int n ) {
-	
-	static int first=1;
-
-	unsigned int __stdcall CpuFunc(void * );
-
-	unsigned ThreadID;
-
-	MDTV_CPU_LIMIT = n;
-	MDTV_CPU_CURRENT = clock()/1000;
-  
-
-    if (first) { // Lancer le thread au 1er appel seulement.
-        first=0;
-		_beginthreadex(
-
-			NULL,                        // no security attributes 
-			0,                           // use default stack size  
-			CpuFunc,				     // thread function
-			NULL,            // argument to thread function
-			0,                           // use default creation flags 
-			&ThreadID);                  // returns the thread identifier
-	}
-		
-}
-#endif