diff --git a/tests/test_registry.py b/tests/test_registry.py
new file mode 100644
index 0000000..82d3e5f
--- /dev/null
+++ b/tests/test_registry.py
@@ -0,0 +1,167 @@
+import datetime
+
+import pytest
+from pfwtest import *
+
+import windows
+
+
+testbasekeypath = r"HKEY_CURRENT_USER\SOFTWARE\PythonForWindows\Test"
+basekeytest = windows.system.registry(testbasekeypath, gdef.KEY_WOW64_64KEY | gdef.KEY_READ | gdef.KEY_WRITE)
+
+if not basekeytest.exists:
+    basekeytest.create()
+
+@pytest.fixture()
+def empty_test_base_key():
+    assert basekeytest.exists
+    for subkey in basekeytest.subkeys:
+            subkey.delete()
+    # Use of lowlevel_value_enum allow deleting value with NULL bytes
+    for value in basekeytest.values:
+        del basekeytest[value.name]
+    assert not basekeytest.subkeys
+    assert not basekeytest.values
+
+# Clean registry before everytest
+pytestmark = pytest.mark.usefixtures("empty_test_base_key")
+
+
+@pytest.mark.parametrize("value", [1, "LOL", 0x11223344, ""])
+def test_registry_set_get_simple_values(value):
+    basekeytest["tst1"] = value
+    assert basekeytest["tst1"].value == value
+
+# TODO: test with other registry type (the stranges ones)
+@pytest.mark.parametrize("value, type", [
+    (0x11223344, gdef.REG_DWORD),
+    (0x1122334455667788, gdef.REG_QWORD),
+    ("", gdef.REG_SZ),
+    (["AAAA", "BBBB", "CCCC"], gdef.REG_MULTI_SZ),
+    ("123\x00123" + "".join(chr(c) for c in range(256)), gdef.REG_BINARY),
+])
+def test_registry_set_get_simple_values_with_types(value, type):
+    basekeytest["tst2"] = (value, type)
+    assert basekeytest["tst2"].value == value
+
+UNICODE_PATH_NAME = u'\u4e2d\u56fd\u94f6\u884c\u7f51\u94f6\u52a9\u624b'
+UNICODE_RU_STRING = u"\u0441\u0443\u043a\u0430\u0020\u0431\u043b\u044f\u0442\u044c" # CYKA BLYAT in Cyrillic
+
+# Could be done in test_registry_set_get_simple_values
+# But was the cause a special bug / reimplem due to _winreg using ANSI functions
+# So create a special test with a very identifiable name / bug cause
+
+@pytest.mark.parametrize("unistr", [UNICODE_PATH_NAME, UNICODE_RU_STRING, u""])
+def test_registry_unicode_string_value(unistr):
+    basekeytest["tst3"] = unistr
+    assert basekeytest["tst3"].value == unistr
+
+def test_registry_unicode_multi_string():
+    TST_MULTI = [UNICODE_PATH_NAME, "Hello World", UNICODE_RU_STRING]
+    basekeytest["tst4"] = (TST_MULTI, gdef.REG_MULTI_SZ)
+    assert basekeytest["tst4"].value == TST_MULTI
+
+
+@pytest.mark.parametrize("unistr", [UNICODE_PATH_NAME, UNICODE_RU_STRING])
+def test_registry_unicode_value_name(unistr):
+    basekeytest[unistr] = 42
+    assert basekeytest[unistr].value == 42
+    # assert unistr in [v.name for v in basekeytest.values]
+    del basekeytest[unistr]
+
+def test_registry_subkeys_create_delete():
+    subname = "MyTestSubKey"
+    subkey = basekeytest(subname)
+    assert not subkey.exists
+    subkey.create()
+    assert subkey.exists
+    subkey.delete()
+    assert not subkey.exists
+
+def test_registry_get_key_info():
+    subname = "MyTestSubKeySizeInfo"
+    subkey = basekeytest(subname).create()
+    subkey["A"] = "12345"
+    subkey["AAAA"] = "1"
+    max_name_size, max_value_size = subkey.get_key_size_info()
+    assert max_name_size == 4 # AAAA
+    assert max_value_size == 6 * 2 # 12345\x00 -> 2 BYTE per char (utf-16)
+    other_info = subkey.info
+    assert other_info[0] == 0 # Nb subkeys
+    assert other_info[1] == 2 # Nb values
+    assert isinstance(other_info[2], (int, long)) # Last write
+
+
+def test_registry_unicode_value_name_enumerate():
+    name1 = u"enum_" + UNICODE_PATH_NAME
+    name2 = u"enum_" + UNICODE_RU_STRING
+    basekeytest[name1] = 1
+    basekeytest[name2] = 2
+    values_names = [v.name for v in basekeytest.values]
+    assert name1 in values_names
+    assert name2 in values_names
+
+
+class CustomCountForRegistryTest(object):
+    TESTKEY = None
+
+    def __init__(self):
+        self.value = 0
+
+
+    def __iter__(self):
+        while True:
+            print("NEXT")
+            if self.value == 1:
+                print("ADDING HARDCODE KEY !")
+                self.TESTKEY[BIG_KEY_NAME] = BIG_KEY_VALUE
+            yield self.value
+            self.value += 1
+
+BIG_KEY_NAME = "BIG" * 50
+BIG_KEY_VALUE = "BIG" * 0x2000
+
+def test_registry_unicode_value_name_enumerate_with_race_condition(monkeypatch):
+    import itertools
+    # With itertools.count() to add a big key in the middle of the enumeration
+    # With a bigger name & data that the key currently existing
+
+    # Create a new subkey so that the KeyInfos are "reset"
+    subkeyname = str(datetime.datetime.now())
+    assert not basekeytest(subkeyname).exists
+    subkey = basekeytest(subkeyname).create()
+    try:
+        CustomCountForRegistryTest.TESTKEY = subkey
+        monkeypatch.setattr(itertools, "count", CustomCountForRegistryTest)
+        name1 = u"enum_" + UNICODE_PATH_NAME
+        name2 = u"enum_" + UNICODE_RU_STRING
+        subkey[name1] = 1
+        subkey[name2] = 2
+        values_names = [v.name for v in subkey.values]
+        assert name1 in values_names
+        assert name2 in values_names
+        assert BIG_KEY_NAME in values_names
+    finally:
+        subkey.delete()
+
+def test_registry_unicode_subkeys_create_delete():
+    subname =  UNICODE_RU_STRING + unicode(datetime.datetime.now())
+    subkey = basekeytest(subname)
+    assert not subkey.exists
+    subkey.create()
+    assert subkey.exists
+    subkey.delete()
+    assert not subkey.exists
+
+
+def test_registry_unicode_subkeys_enumerate():
+    name1 = u"subkey" + UNICODE_PATH_NAME
+    name2 = u"subkey" + UNICODE_RU_STRING
+    basekeytest(name1).create()
+    basekeytest(name2).create()
+    subkey_names = [sk.name for sk in basekeytest.subkeys]
+    assert name1 in subkey_names
+    assert name2 in subkey_names
+
+
+
diff --git a/windows/winobject/registry.py b/windows/winobject/registry.py
index e6cbb57..9423a34 100644
--- a/windows/winobject/registry.py
+++ b/windows/winobject/registry.py
@@ -1,10 +1,29 @@
-import _winreg
+import sys
+import ctypes
 import itertools
 import struct
 from collections import namedtuple
 
 import windows
-from windows.generated_def.windef import KEY_READ, REG_QWORD
+from windows.dbgprint import dbgprint
+import windows.generated_def as gdef
+from windows import winproxy
+
+WENCODING = "utf-16-le"
+
+# So _winreg does not handle unicode stuff in Py2 :(
+# Need to rewrite some stuff manually :(
+import _winreg
+
+class WinRegistryKey(gdef.HKEY):
+    _close_function = staticmethod(winproxy.RegCloseKey)
+
+    def __del__(self):
+        if sys.path is None: # Late shutdown (not sur winproxy is still up
+            return
+        if self: # Not NULL handle ?
+            dbgprint("Closing registry key handle {0:#x}".format(self.value), 'REGISTRY')
+            self._close_function(self)
 
 
 
@@ -16,7 +35,75 @@ class ExpectWindowsError(object):
         pass
 
     def __exit__(self, etype, e, tb):
-        return (etype == WindowsError and e.winerror == self.errornumber)
+        return (etype in (winproxy.WinproxyError, WindowsError) and e.winerror == self.errornumber)
+
+# Translation reg-buffer <-> python methodes
+def Reg2Py_QWORD(buffer, size):
+    return buffer.cast(gdef.PULONG64)[0]
+
+def Py2Reg_QWORD(obj):
+    return struct.pack("<Q", obj)
+
+def Reg2Py_DWORD(buffer, size):
+    # Check size ?
+    return buffer.cast(gdef.LPDWORD)[0]
+
+def Py2Reg_DWORD(obj):
+    return struct.pack("<I", obj)
+
+def Reg2Py_BINARY(buffer, size):
+    return str(bytearray(buffer[:size]))
+
+def Py2Reg_BINARY(obj):
+    return obj
+
+
+def Reg2Py_SZ(buffer, size):
+    # Buffer is UTF16. buffer is extended-buffer
+    if size == 0:
+        return u""
+    if buffer[size] == 0 and buffer[size - 1] == 0:
+        # NULL TERMINATED: EASY
+        return buffer.as_wstring()
+    # Not null terminated: keep last byte
+    return (gdef.WCHAR * (size / 2)).from_buffer(buffer)[:]
+
+def Py2Reg_SZ(obj):
+    return obj.encode(WENCODING)
+
+def Reg2Py_Multi_SZ(buffer, size):
+    if not size:
+        return []
+    rawstr = "".join([chr(c) for c in buffer[:size]])
+    if rawstr[-4:] != "\x00\x00\x00\x00": # 2 UNICODE NULL bytes (4 \x00)
+        rawstr += "\x00\x00\x00\x00"
+    # Decode as utf-16 to get multiple unicode string sepated by NULL BYTE
+    unistr = rawstr.decode(WENCODING)
+    # Remove final \x00
+    unistr = unistr[:-2] # 2 UTF-16 NULL BITS (was 4 bits in encoded)
+    return unistr.split(u"\x00") # Return as list of string
+
+def Py2Reg_Multi_SZ(obj):
+    # Work on encoded values (to prevent str/unicode errors)
+    uni_list = [s.encode(WENCODING) for s in obj]
+    # Separate by UTF-16 NULL BYTE (2 \x00)
+    uni_str = "\x00\x00".join(uni_list)
+    # Add UTF-16 NULL byte for final string + final UTF-16 \x00 (4 \x00)
+    return uni_str + "\x00\x00\x00\x00"
+
+
+
+DECODE_METHOD = 0
+ENCODE_METHOD = 1
+
+ENCODE_DECODE_METHODS = {
+    gdef.REG_SZ: (Reg2Py_SZ, Py2Reg_SZ),
+    gdef.REG_MULTI_SZ: (Reg2Py_Multi_SZ, Py2Reg_Multi_SZ),
+    gdef.REG_BINARY: (Reg2Py_BINARY, Py2Reg_BINARY),
+    gdef.REG_DWORD: (Reg2Py_DWORD, Py2Reg_DWORD),
+    gdef.REG_QWORD: (Reg2Py_QWORD, Py2Reg_QWORD),
+}
+
 
 
 KeyValue = namedtuple("KeyValue", ["name", "value", "type"])
@@ -25,7 +112,7 @@ KeyValue = namedtuple("KeyValue", ["name", "value", "type"])
 
 class PyHKey(object):
     """A windows registry key"""
-    def __init__(self, surkey, name, sam=KEY_READ):
+    def __init__(self, surkey, name, sam=gdef.KEY_READ):
         self.surkey = surkey
         self.name = name
         self.fullname = self.surkey.fullname + "\\" + self.name if self.name else self.surkey.name
@@ -36,27 +123,44 @@ class PyHKey(object):
     def __repr__(self):
         return '<PyHKey "{0}">'.format(self.fullname)
 
+    def _open_key(self, handle, name, sam):
+        result = WinRegistryKey()
+        winproxy.RegOpenKeyExW(handle, name, 0, sam, result)
+        return result
+
+    def _create_key(self, parent, name, sam):
+        result = WinRegistryKey()
+        flags = 0
+        winproxy.RegCreateKeyExW(parent, name, 0, None, flags, sam, None, result, None)
+        return result
+
     @property
     def phkey(self):
         if self._phkey is not None:
             return self._phkey
         try:
-            self._phkey = _winreg.OpenKeyEx(self.surkey.phkey, self.name, 0, self.sam)
+            self._phkey = self._open_key(self.surkey.phkey, self.name, self.sam)
         except WindowsError as e:
             raise WindowsError(e.winerror, "Could not open registry key <{0}> ({1})".format(self.fullname, e.strerror))
         return self._phkey
 
     @property
     def exists(self):
-        # Best way todo ?
-        # TODO: document
-        if self._phkey is not None:
+        # May have been deleted in between
+        # So <self._phkey> tells use nothing
+        if self._phkey: # Not None + pointer not NULL
+            try:
+                self.get_key_size_info()
+            except WindowsError as e:
+                if e.winerror == gdef.ERROR_KEY_DELETED:
+                    return False
+                raise
             return True
         try:
-            tmpphkey = _winreg.OpenKeyEx(self.surkey.phkey, self.name)
+            tmpphkey = self._open_key(self.surkey.phkey, self.name, gdef.KEY_READ)
         except WindowsError as e:
             return False
-        _winreg.CloseKey(tmpphkey)
+        winproxy.RegCloseKey(tmpphkey)
         return True
 
     @property
@@ -66,8 +170,13 @@ class PyHKey(object):
         :type: [:class:`PyHKey`] - A list of keys"""
         res = []
         with ExpectWindowsError(259):
+            default_name_size = 256 + 1
+            name_size = gdef.DWORD(default_name_size)
+            name_buffer = ctypes.create_unicode_buffer(name_size.value)
             for i in itertools.count():
-                res.append(_winreg.EnumKey(self.phkey, i))
+                name_size.value = default_name_size
+                winproxy.RegEnumKeyExW(self.phkey, i, name_buffer, name_size, None, None, None, None)
+                res.append(name_buffer.value)
         return [PyHKey(self, n) for n in  res]
 
     @property
@@ -78,10 +187,11 @@ class PyHKey(object):
         res = []
         with ExpectWindowsError(259):
             for i in itertools.count():
+                #
                 name_value_type = _winreg.EnumValue(self.phkey, i)
                 # _winreg doest not support REG_QWORD in python2
                 # See http://bugs.python.org/issue23026
-                if name_value_type[2] == REG_QWORD:
+                if name_value_type[2] == gdef.REG_QWORD:
                     name = name_value_type[0]
                     value = struct.unpack("<Q", name_value_type[1])[0]
                     type = name_value_type[2]
@@ -89,9 +199,60 @@ class PyHKey(object):
                 res.append(name_value_type)
         return [KeyValue(*r) for r in res]
 
+    def get_key_size_info(self):
+        max_name_len = gdef.DWORD()
+        max_value_len = gdef.DWORD()
+        winproxy.RegQueryInfoKeyW(self.phkey, None, None, None, None, None, None, None, max_name_len, max_value_len, None, None)
+        return (max_name_len.value, max_value_len.value)
+
+    @property
+    def values(self):
+        """TST VERSION"""
+        res = []
+        # Get max info keys
+
+        max_name_size, max_data_size = self.get_key_size_info()
+        # Null terminators
+        max_name_size += 1
+        max_data_size += 1
+        with ExpectWindowsError(259):
+            for i in itertools.count():
+                value_type = gdef.DWORD()
+                namesize = gdef.DWORD(max_name_size)
+                keyname = ctypes.create_unicode_buffer(namesize.value)
+                datasize = gdef.DWORD(max_data_size)
+                databuffer = windows.utils.BUFFER(gdef.BYTE, nbelt=datasize.value)()
+                # A value can have been added in-between.
+                # So recheck the size given by get_key_size_info :)
+                while True:
+                    try:
+                        winproxy.RegEnumValueW(self.phkey, i, keyname, namesize, None, value_type, databuffer, datasize)
+                        break
+                    except WindowsError as e:
+                        if e.winerror != gdef.ERROR_MORE_DATA:
+                            raise
+                        # Update the sizes / buffers & try again :)
+                        max_name_size, max_data_size = self.get_key_size_info()
+                        max_name_size += 1
+                        max_data_size += 1
+                        namesize = gdef.DWORD(max_name_size)
+                        keyname = ctypes.create_unicode_buffer(namesize.value)
+                        datasize = gdef.DWORD(max_data_size)
+                        databuffer = windows.utils.BUFFER(gdef.BYTE, nbelt=datasize.value)()
+                vobj = ENCODE_DECODE_METHODS[value_type.value][DECODE_METHOD](databuffer, datasize.value)
+                res.append(KeyValue(keyname.value, vobj, value_type.value))
+                # res.append(vobj)
+        return res
+
+
     @property
     def info(self):
-        return _winreg.QueryInfoKey(self.phkey)
+        # Need other stuff ?
+        nb_key = gdef.DWORD()
+        nb_values = gdef.DWORD()
+        last_modif = gdef.FILETIME()
+        winproxy.RegQueryInfoKeyW(self.phkey, None, None, None, nb_key, None, None, nb_values, None, None, None, last_modif)
+        return nb_key.value, nb_values.value, int(last_modif)
 
     @property
     def last_write(self):
@@ -102,10 +263,23 @@ class PyHKey(object):
 
         :rtype: :class:`KeyValue`
         """
-        value, type = _winreg.QueryValueEx(self.phkey, value_name)
-        if type == REG_QWORD:
-            value = struct.unpack("<Q", value)[0]
-        return KeyValue(value_name, value, type)
+        # value, type = _winreg.QueryValueEx(self.phkey, value_name)
+
+        type = gdef.DWORD(0)
+        size = gdef.DWORD(0x100)
+        while True:
+            buffer = windows.utils.BUFFER(gdef.BYTE, nbelt=size.value)()
+            try:
+                winproxy.RegQueryValueExW(self.phkey, value_name, None, type, buffer, size)
+                break
+            except WindowsError as e:
+                if e.winerror != gdef.ERROR_MORE_DATA:
+                    raise
+                size.value *= 2
+                buffer = windows.utils.BUFFER(gdef.BYTE, nbelt=size.value)()
+                continue
+        vobj = ENCODE_DECODE_METHODS[type.value][DECODE_METHOD](buffer, size.value)
+        return KeyValue(value_name, vobj, type.value)
 
     def _guess_value_type(self, value):
         if isinstance(value, basestring):
@@ -122,13 +296,16 @@ class PyHKey(object):
         """Set the value for ``name`` to ``value``. if ``type`` is None try to guess items"""
         if type is None:
             type = self._guess_value_type(value)
-        if type == REG_QWORD:
-            value = struct.pack("<Q", value)
-        return _winreg.SetValueEx(self.phkey, name, 0, type, value)
+
+
+        buffer = ENCODE_DECODE_METHODS[type][ENCODE_METHOD](value)
+        if isinstance(buffer, str): # Should not be unicode at this point
+            buffer = windows.utils.BUFFER(gdef.BYTE).from_buffer_copy(buffer)
+        return winproxy.RegSetValueExW(self.phkey, name, 0, type, buffer, len(buffer))
 
     def delete_value(self, name):
         """Delete the value with ``name``"""
-        return _winreg.DeleteValue(self.phkey, name)
+        return winproxy.RegDeleteValueW(self.phkey, name)
 
 
     def open_subkey(self, name, sam=None):
@@ -150,7 +327,7 @@ class PyHKey(object):
     def create(self):
         """Create the registry key"""
         try:
-            self._phkey = _winreg.CreateKeyEx(self.surkey.phkey, self.name, 0, self.sam)
+            self._phkey = self._create_key(self.surkey.phkey, self.name, self.sam)
         except WindowsError as e:
             raise WindowsError(e.winerror, "Could not create registry key <{0}> ({1})".format(self.fullname, e.strerror))
         return self
@@ -158,7 +335,7 @@ class PyHKey(object):
     def delete(self):
         """Delete the registry key"""
         try:
-            _winreg.DeleteKeyEx(self.surkey.phkey, self.name, self.sam, 0)
+            windows.winproxy.RegDeleteKeyExW(self.surkey.phkey, self.name, self.sam, 0)
         except WindowsError as e:
             raise WindowsError(e.winerror, "Could not delete registry key <{0}> ({1})".format(self.fullname, e.strerror))
         return None
@@ -204,7 +381,7 @@ class Registry(object):
         "HKEY_USERS" : HKEY_USERS
     }
 
-    def __init__(self, sam=KEY_READ):
+    def __init__(self, sam=gdef.KEY_READ):
         self.sam = sam
 
     @classmethod
diff --git a/windows/winproxy/apis/advapi32.py b/windows/winproxy/apis/advapi32.py
index 4e949ad..314e64d 100644
--- a/windows/winproxy/apis/advapi32.py
+++ b/windows/winproxy/apis/advapi32.py
@@ -167,19 +167,19 @@ def GetNamedSecurityInfoA(pObjectName, ObjectType, SecurityInfo, ppsidOwner=None
 def GetNamedSecurityInfoW(pObjectName, ObjectType, SecurityInfo, ppsidOwner=None, ppsidGroup=None, ppDacl=None, ppSacl=None, ppSecurityDescriptor=None):
     return GetNamedSecurityInfoW.ctypes_function(pObjectName, ObjectType, SecurityInfo, ppsidOwner, ppsidGroup, ppDacl, ppSacl, ppSecurityDescriptor)
 
-@Advapi32Proxy(error_check=succeed_on_zero)
+@Advapi32Proxy(error_check=result_is_error_code)
 def GetSecurityInfo(handle, ObjectType, SecurityInfo, ppsidOwner=None, ppsidGroup=None, ppDacl=None, ppSacl=None, ppSecurityDescriptor=None):
     return GetSecurityInfo.ctypes_function(handle, ObjectType, SecurityInfo, ppsidOwner, ppsidGroup, ppDacl, ppSacl, ppSecurityDescriptor)
 
-@Advapi32Proxy(error_check=succeed_on_zero)
+@Advapi32Proxy(error_check=result_is_error_code)
 def SetSecurityInfo(handle, ObjectType, SecurityInfo, psidOwner, psidGroup, pDacl, pSacl):
     return SetSecurityInfo.ctypes_function(handle, ObjectType, SecurityInfo, psidOwner, psidGroup, pDacl, pSacl)
 
-@Advapi32Proxy(error_check=succeed_on_zero)
+@Advapi32Proxy(error_check=result_is_error_code)
 def SetNamedSecurityInfoA(pObjectName, ObjectType, SecurityInfo, psidOwner, psidGroup, pDacl, pSacl):
     return SetNamedSecurityInfoA.ctypes_function(pObjectName, ObjectType, SecurityInfo, psidOwner, psidGroup, pDacl, pSacl)
 
-@Advapi32Proxy(error_check=succeed_on_zero)
+@Advapi32Proxy(error_check=result_is_error_code)
 def SetNamedSecurityInfoW(pObjectName, ObjectType, SecurityInfo, psidOwner, psidGroup, pDacl, pSacl):
     return SetNamedSecurityInfoW.ctypes_function(pObjectName, ObjectType, SecurityInfo, psidOwner, psidGroup, pDacl, pSacl)
 
@@ -240,34 +240,111 @@ def GetAce(pAcl, dwAceIndex, pAce):
 
 # Registry
 
-@Advapi32Proxy(error_check=succeed_on_zero)
+@Advapi32Proxy(error_check=result_is_error_code)
 def RegOpenKeyExA(hKey, lpSubKey, ulOptions, samDesired, phkResult):
     return RegOpenKeyExA.ctypes_function(hKey, lpSubKey, ulOptions, samDesired, phkResult)
 
-@Advapi32Proxy(error_check=succeed_on_zero)
+@Advapi32Proxy(error_check=result_is_error_code)
 def RegOpenKeyExW(hKey, lpSubKey, ulOptions, samDesired, phkResult):
     return RegOpenKeyExW.ctypes_function(hKey, lpSubKey, ulOptions, samDesired, phkResult)
 
-@Advapi32Proxy(error_check=succeed_on_zero)
+@Advapi32Proxy(error_check=result_is_error_code)
+def RegCreateKeyExA(hKey, lpSubKey, Reserved, lpClass, dwOptions, samDesired, lpSecurityAttributes, phkResult, lpdwDisposition):
+    return RegCreateKeyExA.ctypes_function(hKey, lpSubKey, Reserved, lpClass, dwOptions, samDesired, lpSecurityAttributes, phkResult, lpdwDisposition)
+
+@Advapi32Proxy(error_check=result_is_error_code)
+def RegCreateKeyExW(hKey, lpSubKey, Reserved, lpClass, dwOptions, samDesired, lpSecurityAttributes, phkResult, lpdwDisposition):
+    return RegCreateKeyExW.ctypes_function(hKey, lpSubKey, Reserved, lpClass, dwOptions, samDesired, lpSecurityAttributes, phkResult, lpdwDisposition)
+
+@Advapi32Proxy(error_check=result_is_error_code)
 def RegGetValueA(hkey, lpSubKey, lpValue, dwFlags, pdwType, pvData, pcbData):
     return RegGetValueA.ctypes_function(hkey, lpSubKey, lpValue, dwFlags, pdwType, pvData, pcbData)
 
-@Advapi32Proxy(error_check=succeed_on_zero)
+@Advapi32Proxy(error_check=result_is_error_code)
 def RegGetValueW(hkey, lpSubKey=None, lpValue=NeededParameter, dwFlags=0, pdwType=None, pvData=None, pcbData=None):
     return RegGetValueW.ctypes_function(hkey, lpSubKey, lpValue, dwFlags, pdwType, pvData, pcbData)
 
-@Advapi32Proxy(error_check=succeed_on_zero)
+@Advapi32Proxy(error_check=result_is_error_code)
 def RegQueryValueExA(hKey, lpValueName, lpReserved, lpType, lpData, lpcbData):
     return RegQueryValueExA.ctypes_function(hKey, lpValueName, lpReserved, lpType, lpData, lpcbData)
 
-@Advapi32Proxy(error_check=succeed_on_zero)
+@Advapi32Proxy(error_check=result_is_error_code)
 def RegQueryValueExW(hKey, lpValueName, lpReserved, lpType, lpData, lpcbData):
-    return RegQueryValueExA.ctypes_function(hKey, lpValueName, lpReserved, lpType, lpData, lpcbData)
+    return RegQueryValueExW.ctypes_function(hKey, lpValueName, lpReserved, lpType, lpData, lpcbData)
 
-@Advapi32Proxy(error_check=succeed_on_zero)
+@Advapi32Proxy(error_check=result_is_error_code)
 def RegCloseKey(hKey):
     return RegCloseKey.ctypes_function(hKey)
 
+@Advapi32Proxy(error_check=result_is_error_code)
+def RegSetValueExW(hKey, lpValueName, Reserved, dwType, lpData, cbData):
+    return RegSetValueExW.ctypes_function(hKey, lpValueName, Reserved, dwType, lpData, cbData)
+
+@Advapi32Proxy(error_check=result_is_error_code)
+def RegSetValueExA(hKey, lpValueName, Reserved, dwType, lpData, cbData):
+    return RegSetValueExA.ctypes_function(hKey, lpValueName, Reserved, dwType, lpData, cbData)
+
+@Advapi32Proxy(error_check=result_is_error_code)
+def RegSetKeyValueA(hKey, lpSubKey, lpValueName, dwType, lpData, cbData):
+    return RegSetKeyValueA.ctypes_function(hKey, lpSubKey, lpValueName, dwType, lpData, cbData)
+
+@Advapi32Proxy(error_check=result_is_error_code)
+def RegSetKeyValueW(hKey, lpSubKey, lpValueName, dwType, lpData, cbData):
+    return RegSetKeyValueW.ctypes_function(hKey, lpSubKey, lpValueName, dwType, lpData, cbData)
+
+@Advapi32Proxy(error_check=result_is_error_code)
+def RegEnumKeyExA(hKey, dwIndex, lpName, lpcchName, lpReserved, lpClass, lpcchClass, lpftLastWriteTime):
+    return RegEnumKeyExA.ctypes_function(hKey, dwIndex, lpName, lpcchName, lpReserved, lpClass, lpcchClass, lpftLastWriteTime)
+
+@Advapi32Proxy(error_check=result_is_error_code)
+def RegEnumKeyExW(hKey, dwIndex, lpName, lpcchName, lpReserved, lpClass, lpcchClass, lpftLastWriteTime):
+    return RegEnumKeyExW.ctypes_function(hKey, dwIndex, lpName, lpcchName, lpReserved, lpClass, lpcchClass, lpftLastWriteTime)
+
+@Advapi32Proxy(error_check=result_is_error_code)
+def RegGetKeySecurity(hKey, SecurityInformation, pSecurityDescriptor, lpcbSecurityDescriptor):
+    return RegGetKeySecurity.ctypes_function(hKey, SecurityInformation, pSecurityDescriptor, lpcbSecurityDescriptor)
+
+@Advapi32Proxy(error_check=result_is_error_code)
+def RegQueryInfoKeyA(hKey, lpClass, lpcchClass, lpReserved, lpcSubKeys, lpcbMaxSubKeyLen, lpcbMaxClassLen, lpcValues, lpcbMaxValueNameLen, lpcbMaxValueLen, lpcbSecurityDescriptor, lpftLastWriteTime):
+    return RegQueryInfoKeyA.ctypes_function(hKey, lpClass, lpcchClass, lpReserved, lpcSubKeys, lpcbMaxSubKeyLen, lpcbMaxClassLen, lpcValues, lpcbMaxValueNameLen, lpcbMaxValueLen, lpcbSecurityDescriptor, lpftLastWriteTime)
+
+@Advapi32Proxy(error_check=result_is_error_code)
+def RegQueryInfoKeyW(hKey, lpClass, lpcchClass, lpReserved, lpcSubKeys, lpcbMaxSubKeyLen, lpcbMaxClassLen, lpcValues, lpcbMaxValueNameLen, lpcbMaxValueLen, lpcbSecurityDescriptor, lpftLastWriteTime):
+    return RegQueryInfoKeyW.ctypes_function(hKey, lpClass, lpcchClass, lpReserved, lpcSubKeys, lpcbMaxSubKeyLen, lpcbMaxClassLen, lpcValues, lpcbMaxValueNameLen, lpcbMaxValueLen, lpcbSecurityDescriptor, lpftLastWriteTime)
+
+@Advapi32Proxy(error_check=result_is_error_code)
+def RegDeleteKeyValueW(hKey, lpSubKey, lpValueName):
+    return RegDeleteKeyValueW.ctypes_function(hKey, lpSubKey, lpValueName)
+
+@Advapi32Proxy(error_check=result_is_error_code)
+def RegDeleteKeyValueA(hKey, lpSubKey, lpValueName):
+    return RegDeleteKeyValueA.ctypes_function(hKey, lpSubKey, lpValueName)
+
+@Advapi32Proxy(error_check=result_is_error_code)
+def RegDeleteKeyExA(hKey, lpSubKey, samDesired, Reserved):
+    return RegDeleteKeyExA.ctypes_function(hKey, lpSubKey, samDesired, Reserved)
+
+@Advapi32Proxy(error_check=result_is_error_code)
+def RegDeleteKeyExW(hKey, lpSubKey, samDesired, Reserved):
+    return RegDeleteKeyExW.ctypes_function(hKey, lpSubKey, samDesired, Reserved)
+
+@Advapi32Proxy(error_check=result_is_error_code)
+def RegDeleteValueA(hKey, lpValueName):
+    return RegDeleteValueA.ctypes_function(hKey, lpValueName)
+
+@Advapi32Proxy(error_check=result_is_error_code)
+def RegDeleteValueW(hKey, lpValueName):
+    return RegDeleteValueW.ctypes_function(hKey, lpValueName)
+
+@Advapi32Proxy(error_check=result_is_error_code)
+def RegEnumValueA(hKey, dwIndex, lpValueName, lpcchValueName, lpReserved, lpType, lpData, lpcbData):
+    return RegEnumValueA.ctypes_function(hKey, dwIndex, lpValueName, lpcchValueName, lpReserved, lpType, lpData, lpcbData)
+
+@Advapi32Proxy(error_check=result_is_error_code)
+def RegEnumValueW(hKey, dwIndex, lpValueName, lpcchValueName, lpReserved, lpType, lpData, lpcbData):
+    return RegEnumValueW.ctypes_function(hKey, dwIndex, lpValueName, lpcchValueName, lpReserved, lpType, lpData, lpcbData)
+
+
 # Service
 
 @Advapi32Proxy()