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diff --git a/examples/simplewidget.py b/examples/simplewidget.py
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+#!/usr/bin/env python
+# coding: utf-8
+# /*##########################################################################
+#
+# Copyright (c) 2016-2017 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.
+#
+# ###########################################################################*/
+"""This script shows a gallery of simple widgets provided by silx.
+
+It shows the following widgets:
+
+- :class:WaitingPushButton: A button with a progress-like waiting animated icon
+"""
+
+__authors__ = ["V. Valls"]
+__license__ = "MIT"
+__date__ = "12/01/2017"
+
+import sys
+from silx.gui import qt
+from silx.gui.widgets.WaitingPushButton import WaitingPushButton
+from silx.gui.widgets.ThreadPoolPushButton import ThreadPoolPushButton
+
+
+class SimpleWidgetExample(qt.QMainWindow):
+    """This windows shows simple widget provided by silx."""
+
+    def __init__(self):
+        """Constructor"""
+        qt.QMainWindow.__init__(self)
+        self.setWindowTitle("Silx simple widget example")
+
+        main_panel = qt.QWidget(self)
+        main_panel.setLayout(qt.QVBoxLayout())
+
+        main_panel.layout().addWidget(qt.QLabel("WaitingPushButton"))
+        main_panel.layout().addWidget(self.createWaitingPushButton())
+        main_panel.layout().addWidget(self.createWaitingPushButton2())
+
+        main_panel.layout().addWidget(qt.QLabel("ThreadPoolPushButton"))
+        main_panel.layout().addWidget(self.createThreadPoolPushButton())
+
+        self.setCentralWidget(main_panel)
+
+    def createWaitingPushButton(self):
+        widget = WaitingPushButton(text="Push me and wait for ever")
+        widget.clicked.connect(widget.swapWaiting)
+        return widget
+
+    def createWaitingPushButton2(self):
+        widget = WaitingPushButton(text="Push me")
+        widget.setDisabledWhenWaiting(False)
+        widget.clicked.connect(widget.swapWaiting)
+        return widget
+
+    def printResult(self, result):
+        print(result)
+
+    def printError(self, result):
+        print("Error")
+        print(result)
+
+    def takesTimeToComputePow(self, a, b):
+        qt.QThread.sleep(2)
+        return a ** b
+
+    def createThreadPoolPushButton(self):
+        widget = ThreadPoolPushButton(text="Compute 2^16")
+        widget.setCallable(self.takesTimeToComputePow, 2, 16)
+        widget.succeeded.connect(self.printResult)
+        widget.failed.connect(self.printError)
+        return widget
+
+
+def main():
+    """
+    Main function
+    """
+    app = qt.QApplication([])
+    sys.excepthook = qt.exceptionHandler
+    window = SimpleWidgetExample()
+    window.show()
+    result = app.exec_()
+    # remove ending warnings relative to QTimer
+    app.deleteLater()
+    sys.excepthook = sys.__excepthook__
+    sys.exit(result)
+
+
+main()