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diff --git a/src/silx/gui/utils/__init__.py b/src/silx/gui/utils/__init__.py
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+++ b/src/silx/gui/utils/__init__.py
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+# coding: utf-8
+# /*##########################################################################
+#
+# Copyright (c) 2018-2019 European Synchrotron Radiation Facility
+#
+# 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.
+#
+# ###########################################################################*/
+"""Miscellaneous helpers for Qt"""
+
+__authors__ = ["T. Vincent"]
+__license__ = "MIT"
+__date__ = "09/03/2018"
+
+
+import contextlib as _contextlib
+
+
+@_contextlib.contextmanager
+def blockSignals(*objs):
+    """Context manager blocking signals of QObjects.
+
+    It restores previous state when leaving.
+
+    :param qt.QObject objs: QObjects for which to block signals
+    """
+    blocked = [(obj, obj.blockSignals(True)) for obj in objs]
+    try:
+        yield
+    finally:
+        for obj, previous in blocked:
+            obj.blockSignals(previous)
+
+
+class LockReentrant():
+    """Context manager to lock a code block and check the state.
+    """
+    def __init__(self):
+        self.__locked = False
+
+    def __enter__(self):
+        self.__locked = True
+
+    def __exit__(self, exc_type, exc_val, exc_tb):
+        self.__locked = False
+
+    def locked(self):
+        """Returns True if the code block is locked"""
+        return self.__locked
+
+
+def getQEventName(eventType):
+    """
+    Returns the name of a QEvent.
+
+    :param Union[int,qt.QEvent] eventType: A QEvent or a QEvent type.
+    :returns: str
+    """
+    from . import qtutils
+    return qtutils.getQEventName(eventType)