diff --git a/door.py b/door.py
index 1372a6a..9fe3c2a 100644
--- a/door.py
+++ b/door.py
@@ -1,28 +1,58 @@
 import time
 import sys
+import logging
+import ctypes
+import traceback
 
-f = open('door.log', 'w')
+OutputDebugString = ctypes.windll.kernel32.OutputDebugStringW
+#OutputDebugString.argtypes = [ctypes.c_char_p]
+  
+class DbgViewHandler(logging.Handler):
+  def __init__(self):
+    logging.Handler.__init__(self)
+        
+  def emit(self, record):
+    OutputDebugString(self.format(record))
 
-f.write("Started...\n")
-f.flush()
+logger = logging.getLogger("pydoor")
+def init_logger():
+  logger.setLevel(logging.DEBUG)
+  ch = DbgViewHandler()
+  ch.setLevel(logging.DEBUG)
+  formatter = logging.Formatter("%(asctime) -25s [%(thread) 5s] %(levelname) -8s %(name) -25s %(message)s")
+  ch.setFormatter(formatter)
+  logger.addHandler(ch)
 
-class Unbuffered(object):
-   def __init__(self, stream):
-       self.stream = stream
-   def write(self, data):
-       self.stream.write(data)
-       self.stream.flush()
-   def flush(self):
-       self.stream.flush()
-   def __getattr__(self, attr):
-       return getattr(self.stream, attr)
+class InfoStreamToLogger(object):
+  def write(self, data):
+    logger.info(data)
+  def flush(self):
+    pass
 
-sys.stdout = sys.stdin = sys.__stdout__ = Unbuffered(f)
+class ErrorStreamToLogger(object):
+  def write(self, data):
+    logger.error(data)
+  def flush(self):
+    pass
 
-import IPython
-IPython.embed_kernel()
+sys.stdout = sys.__stdout__ = InfoStreamToLogger()
+sys.stderr = sys.__stderr__ = ErrorStreamToLogger()
 
-f.write("Stoped\n")
-f.flush()
+def main():
+  init_logger()
+  try:
+    logger.info("door.py started, embed_kernel...")
+
+    import IPython
+    IPython.embed_kernel()
+    logger.info("door.py end.")
+  except Exception as e:
+    err = traceback.format_exc()
+    logger.error("Exception!\n" + err)
+  
+if __name__ == "__main__":
+  main()
+
+
+    
 
-f.close()
diff --git a/pydoor/dllmain.cpp b/pydoor/dllmain.cpp
index 158ec04..bd9ea04 100644
--- a/pydoor/dllmain.cpp
+++ b/pydoor/dllmain.cpp
@@ -5,7 +5,6 @@
 #include "pydoor.h"
 
 #define PY_SCRIPT_NAME "door.py"
-#define LOG_FILENAME "door.log"
 
 short volatile inited = 0;
 HANDLE thread = INVALID_HANDLE_VALUE;
@@ -39,8 +38,11 @@ int RunDoor() {
   }
 
   PyRun_SimpleFile(file, PY_SCRIPT_NAME);
+
   Py_Finalize();
   fclose(file);
+
+  AppendLog("RunDoor end.");
   return 0;
 }
 
@@ -56,10 +58,12 @@ BOOL WINAPI DllMain(
   switch (fdwReason) {
   case DLL_PROCESS_ATTACH:
     if (InterlockedCompareExchange16(&inited, 1, 0) == 0) {
+      AppendLog("Pydoor DLL Attach!");
       thread = ::CreateThread(NULL, 0, ThreadWork, NULL, 0, NULL);
     }
     break;
   case DLL_PROCESS_DETACH: {
+    AppendLog("Pydoor DLL Detach!");
     DWORD ret = ::TerminateThread(thread, 1);
     if (ret == STILL_ACTIVE) {
       return FALSE;
@@ -71,3 +75,5 @@ BOOL WINAPI DllMain(
   }
   return TRUE;
 }
+
+// vim: sw=2:ts=2
\ No newline at end of file
diff --git a/pydoor/pydoor.vcxproj b/pydoor/pydoor.vcxproj
index 4846a77..6ed7ba4 100644
--- a/pydoor/pydoor.vcxproj
+++ b/pydoor/pydoor.vcxproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build" ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ItemGroup Label="ProjectConfigurations">
     <ProjectConfiguration Include="Debug|Win32">
       <Configuration>Debug</Configuration>
@@ -22,32 +22,32 @@
     <ProjectGuid>{C8AEF1D1-B282-4F1B-B1C7-3A78A3B628AF}</ProjectGuid>
     <Keyword>Win32Proj</Keyword>
     <RootNamespace>pydoor</RootNamespace>
-    <WindowsTargetPlatformVersion>8.1</WindowsTargetPlatformVersion>
+    <WindowsTargetPlatformVersion>10.0.17134.0</WindowsTargetPlatformVersion>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
     <ConfigurationType>DynamicLibrary</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>v141</PlatformToolset>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
     <ConfigurationType>DynamicLibrary</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>v141</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
     <ConfigurationType>DynamicLibrary</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>v141</PlatformToolset>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
     <ConfigurationType>DynamicLibrary</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>v141</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
diff --git a/python.props b/python.props
index 3b11987..6b339d3 100644
--- a/python.props
+++ b/python.props
@@ -2,8 +2,8 @@
 <Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ImportGroup Label="PropertySheets" />
   <PropertyGroup Label="UserMacros">
-    <PythonDir Condition="'$(PlatformTarget)' == 'x86'">C:\Python36-32</PythonDir>
-    <PythonDir Condition="'$(PlatformTarget)' == 'x64'">C:\Python36</PythonDir>
+    <PythonDir Condition="'$(PlatformTarget)' == 'x86'">C:\Python37-32</PythonDir>
+    <PythonDir Condition="'$(PlatformTarget)' == 'x64'">C:\Python37</PythonDir>
   </PropertyGroup>
   <PropertyGroup />
   <ItemDefinitionGroup>
diff --git a/test/main.cpp b/test/main.cpp
index ba4e384..146cb87 100644
--- a/test/main.cpp
+++ b/test/main.cpp
@@ -6,7 +6,11 @@
 int main() {
   printf("Press enter to load library...");
   getchar();
-  ::LoadLibraryA("pydoor.dll");
+  HMODULE r =::LoadLibraryA("pydoor.dll");
+  if (r == NULL) {
+	printf("LoadLibrary error!");
+	return 0;
+  }
   printf("Sleep...");
   Sleep(60 * 60 * 1000); // 1 hour
   // RunDoor();
diff --git a/test/test.vcxproj b/test/test.vcxproj
index 8cfec31..9145ef8 100644
--- a/test/test.vcxproj
+++ b/test/test.vcxproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build" ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ItemGroup Label="ProjectConfigurations">
     <ProjectConfiguration Include="Debug|Win32">
       <Configuration>Debug</Configuration>
@@ -22,32 +22,32 @@
     <ProjectGuid>{30DBF561-8F24-4872-9E33-37ED4F4E877B}</ProjectGuid>
     <Keyword>Win32Proj</Keyword>
     <RootNamespace>test</RootNamespace>
-    <WindowsTargetPlatformVersion>8.1</WindowsTargetPlatformVersion>
+    <WindowsTargetPlatformVersion>10.0.17134.0</WindowsTargetPlatformVersion>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>v141</PlatformToolset>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>v141</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>v141</PlatformToolset>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>v141</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>