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+############################################################################
+##
+## Copyright (C) 2016 The Qt Company Ltd.
+## Contact: https://www.qt.io/licensing/
+##
+## This file is part of the examples of Qt for Python.
+##
+## $QT_BEGIN_LICENSE:BSD$
+## Commercial License Usage
+## Licensees holding valid commercial Qt licenses may use this file in
+## accordance with the commercial license agreement provided with the
+## Software or, alternatively, in accordance with the terms contained in
+## a written agreement between you and The Qt Company. For licensing terms
+## and conditions see https://www.qt.io/terms-conditions. For further
+## information use the contact form at https://www.qt.io/contact-us.
+##
+## BSD License Usage
+## Alternatively, you may use this file under the terms of the BSD license
+## as follows:
+##
+## "Redistribution and use in source and binary forms, with or without
+## modification, are permitted provided that the following conditions are
+## met:
+## * Redistributions of source code must retain the above copyright
+## notice, this list of conditions and the following disclaimer.
+## * Redistributions in binary form must reproduce the above copyright
+## notice, this list of conditions and the following disclaimer in
+## the documentation and/or other materials provided with the
+## distribution.
+## * Neither the name of The Qt Company Ltd nor the names of its
+## contributors may be used to endorse or promote products derived
+## from this software without specific prior written permission.
+##
+##
+## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+## "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+## LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+## A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+## OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+## SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+## LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+## DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+## THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+## (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+## OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+##
+## $QT_END_LICENSE$
+##
+############################################################################
+
+
+//! [0]
+def find(self):
+ if not self.findDialog:
+ self.findDialog = FindDialog(self)
+ self.findDialog.findNext.connect(self.findNext)
+
+ self.findDialog.show()
+ self.findDialog.raise()
+ self.findDialog.activateWindow()
+
+//! [0]
+
+//! [1]
+def countWords(self):
+ dialog = WordCountDialog(self)
+ dialog.setWordCount(document().wordCount())
+ dialog.exec_()
+
+//! [1]
+
+//! [2]
+ mb = QMessageBox("Application Name",
+ "Hardware failure.\n\nDisk error detected\nDo you want to stop?",
+ QMessageBox.Question,
+ QMessageBox.Yes | QMessageBox.Default,
+ QMessageBox.No | QMessageBox.Escape,
+ QMessageBox.NoButton)
+ if mb.exec() == QMessageBox.No:
+ # try again
+//! [2]
+
+//! [3]
+ progress = QProgressDialog("Copying files...", "Abort Copy", 0, numFiles, self)
+ progress.setWindowModality(Qt.WindowModal)
+
+ for i in range(numFiles):
+ progress.setValue(i)
+
+ if progress.wasCanceled():
+ break
+ #... copy one file
+
+ progress.setValue(numFiles)
+//! [3]
+
+//! [4]
+# Operation constructor
+def __init__(self, parent=None):
+ QObject.__init__(self, parent)
+
+ pd = QProgressDialog("Operation in progress.", "Cancel", 0, 100)
+ pd.canceled.connect(self.cancel)
+ t = QTimer(self)
+ t.timeout.connect(self.perform)
+ t.start(0)
+
+//! [4] //! [5]
+
+def perform(self):
+ pd.setValue(steps)
+ #... perform one percent of the operation
+ steps += 1
+ if steps > pd.maximum():
+ t.stop()
+
+//! [5] //! [6]
+
+def cancel(self):
+ t.stop()
+ #... cleanup
+
+//! [6]