diff --git a/TermTk/TTkCore/__init__.py b/TermTk/TTkCore/__init__.py
index d96e6ef2..c23e4240 100644
--- a/TermTk/TTkCore/__init__.py
+++ b/TermTk/TTkCore/__init__.py
@@ -1,10 +1,12 @@
-from .log import *
-from .cfg import *
+from .log import TTkLog
+from .cfg import TTkCfg,TTkGlbl
+from .util import TTkUtil
+from .helper import TTkHelper
 from .signal import pyTTkSlot, pyTTkSignal
-from .ttk import *
-from .canvas import *
-from .color import *
-from .string import *
-from .timer import *
-from .filebuffer import *
+from .ttk import TTk
+from .canvas import TTkCanvas
+from .color import TTkColor, TTkColorGradient, TTkLinearGradient
+from .string import TTkString
+from .timer import TTkTimer
+from .filebuffer import TTkFileBuffer
 from .TTkTerm import *
\ No newline at end of file
diff --git a/TermTk/TTkCore/util.py b/TermTk/TTkCore/util.py
new file mode 100644
index 00000000..eb74f021
--- /dev/null
+++ b/TermTk/TTkCore/util.py
@@ -0,0 +1,32 @@
+# MIT License
+#
+# Copyright (c) 2023 Eugenio Parodi <ceccopierangiolieugenio AT googlemail DOT com>
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
+import zlib, pickle, base64
+
+class TTkUtil():
+    @staticmethod
+    def obj_inflate_2_base64(obj):
+        return base64.b64encode(zlib.compress(bytearray(pickle.dumps(obj)))).decode("ascii")
+
+    @staticmethod
+    def base64_deflate_2_obj(b64):
+        return pickle.loads(zlib.decompress(base64.b64decode(b64.encode("ascii"))))
diff --git a/TermTk/TTkWidgets/TTkPickers/messagebox.py b/TermTk/TTkWidgets/TTkPickers/messagebox.py
index 854b4103..7c547a72 100644
--- a/TermTk/TTkWidgets/TTkPickers/messagebox.py
+++ b/TermTk/TTkWidgets/TTkPickers/messagebox.py
@@ -20,11 +20,10 @@
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 # SOFTWARE.
 
-import zlib, pickle, base64
-
 from TermTk.TTkCore.cfg import TTkCfg
 from TermTk.TTkCore.signal import pyTTkSignal,pyTTkSlot
 from TermTk.TTkCore.color import TTkColor
+from TermTk.TTkCore.util import TTkUtil
 from TermTk.TTkCore.string import TTkString
 from TermTk.TTkLayouts.layout import TTkLayout
 from TermTk.TTkLayouts.gridlayout import TTkGridLayout
@@ -150,7 +149,7 @@ class TTkMessageBox(TTkWindow):
         self._widImage = TTkImage(rasteriser=TTkImage.HALFBLOCK)
         self.layout().addWidget(self._widImage,0,0,4,1)
         if compressedData:
-            data = pickle.loads(zlib.decompress(base64.b64decode(compressedData.encode("ascii"))))
+            data = TTkUtil.base64_deflate_2_obj(compressedData)
             self._widImage.setData(data)
             self._widImage.setMinimumSize(16,8)
 
diff --git a/tools/check.import.sh b/tools/check.import.sh
index 96fe51db..0665d031 100755
--- a/tools/check.import.sh
+++ b/tools/check.import.sh
@@ -8,6 +8,7 @@ __check(){
         grep -v \
             -e "from dataclasses" \
             -e "signal.py:from inspect import getfullargspec" \
+            -e "signal.py:from types import LambdaType" \
             -e "colors.py:from .colors_ansi_map" \
             -e "timer.py:import threading, time" \
             -e "log.py:import inspect" \
@@ -34,7 +35,8 @@ __check(){
             -e "string.py:import unicodedata" \
             -e "progressbar.py:import math" \
             -e "uiloader.py:import json" \
-            -e "uiproperties.py:from .properties import *"
+            -e "uiproperties.py:from .properties import *" \
+            -e "util.py:import zlib, pickle, base64"
 } ;
 
 if __check ;  then
diff --git a/tools/dumb.image.tool.py b/tools/dumb.image.tool.py
index 18d3c6f5..1fc39864 100755
--- a/tools/dumb.image.tool.py
+++ b/tools/dumb.image.tool.py
@@ -85,13 +85,13 @@ def _export():
     te.append("=============[Raw Data START]============")
     te.append(str(ttkImage._data).replace('],','],\n'))
     te.append("=============[Raw Data STOP]=============")
-    b64str = base64.b64encode(zlib.compress(bytearray(pickle.dumps(data)))).decode("ascii")
-    te.append('import zlib, pickle, base64')
+    # b64str = base64.b64encode(zlib.compress(bytearray(pickle.dumps(data)))).decode("ascii")
+    b64str = ttk.TTkUtil.obj_inflate_2_base64(data)
+    te.append('from TermTk import TTkUtil')
     te.append(f'# Data generated using {os.path.basename(__file__)}')
-    te.append('data = pickle.loads(zlib.decompress(base64.b64decode((')
-    b64list = '    "' + '" +\n    "'.join([b64str[i:i+128] for i in range(0,len(b64str),128)]) + '"'
+    te.append('data = TTkUtil.base64_deflate_2_obj(')
+    b64list = '    "' + '" +\n    "'.join([b64str[i:i+128] for i in range(0,len(b64str),128)]) + '")'
     te.append(b64list)
-    te.append('        ).encode("ascii"))))')
 
 
 b_export.clicked.connect(_export)