1 /****************************************************************************
3 ** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
4 ** Contact: http://www.qt-project.org/legal
6 ** This file is part of the documentation of the Qt Toolkit.
8 ** $QT_BEGIN_LICENSE:BSD$
9 ** You may use this file under the terms of the BSD license as follows:
11 ** "Redistribution and use in source and binary forms, with or without
12 ** modification, are permitted provided that the following conditions are
14 ** * Redistributions of source code must retain the above copyright
15 ** notice, this list of conditions and the following disclaimer.
16 ** * Redistributions in binary form must reproduce the above copyright
17 ** notice, this list of conditions and the following disclaimer in
18 ** the documentation and/or other materials provided with the
20 ** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
21 ** of its contributors may be used to endorse or promote products derived
22 ** from this software without specific prior written permission.
25 ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
26 ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
27 ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
28 ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
29 ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
30 ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
31 ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
32 ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
33 ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
34 ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
35 ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
39 ****************************************************************************/
42 #include <QMouseEvent>
44 class MyCheckBox : public QCheckBox
47 void mousePressEvent(QMouseEvent *event);
51 void MyCheckBox::mousePressEvent(QMouseEvent *event)
53 if (event->button() == Qt::LeftButton) {
54 // handle left mouse button here
56 // pass on other buttons to base class
57 QCheckBox::mousePressEvent(event);
62 class MyWidget : public QWidget
65 bool event(QEvent *event);
68 static const int MyCustomEventType = 1099;
70 class MyCustomEvent : public QEvent
73 MyCustomEvent() : QEvent((QEvent::Type)MyCustomEventType) {}
77 bool MyWidget::event(QEvent *event)
79 if (event->type() == QEvent::KeyPress) {
80 QKeyEvent *ke = static_cast<QKeyEvent *>(event);
81 if (ke->key() == Qt::Key_Tab) {
82 // special tab handling here
85 } else if (event->type() == MyCustomEventType) {
86 MyCustomEvent *myEvent = static_cast<MyCustomEvent *>(event);
87 // custom event handling here
91 return QWidget::event(event);