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1 /**************************************************************************** |
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2 ** |
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3 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). |
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4 ** All rights reserved. |
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5 ** Contact: Nokia Corporation (qt-info@nokia.com) |
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6 ** |
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7 ** This file is part of the documentation of the Qt Toolkit. |
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8 ** |
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9 ** $QT_BEGIN_LICENSE:LGPL$ |
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10 ** No Commercial Usage |
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11 ** This file contains pre-release code and may not be distributed. |
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12 ** You may use this file in accordance with the terms and conditions |
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13 ** contained in the Technology Preview License Agreement accompanying |
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14 ** this package. |
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15 ** |
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16 ** GNU Lesser General Public License Usage |
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17 ** Alternatively, this file may be used under the terms of the GNU Lesser |
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18 ** General Public License version 2.1 as published by the Free Software |
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19 ** Foundation and appearing in the file LICENSE.LGPL included in the |
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20 ** packaging of this file. Please review the following information to |
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21 ** ensure the GNU Lesser General Public License version 2.1 requirements |
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22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
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23 ** |
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24 ** In addition, as a special exception, Nokia gives you certain additional |
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25 ** rights. These rights are described in the Nokia Qt LGPL Exception |
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26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
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27 ** |
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28 ** If you have questions regarding the use of this file, please contact |
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29 ** Nokia at qt-info@nokia.com. |
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30 ** |
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31 ** |
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32 ** |
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33 ** |
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34 ** |
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35 ** |
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36 ** |
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37 ** |
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38 ** $QT_END_LICENSE$ |
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39 ** |
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40 ****************************************************************************/ |
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41 |
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42 #include <QCheckBox> |
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43 #include <QMouseEvent> |
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44 |
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45 class MyCheckBox : public QCheckBox |
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46 { |
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47 public: |
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48 void mousePressEvent(QMouseEvent *event); |
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49 }; |
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50 |
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51 //! [0] |
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52 void MyCheckBox::mousePressEvent(QMouseEvent *event) |
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53 { |
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54 if (event->button() == Qt::LeftButton) { |
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55 // handle left mouse button here |
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56 } else { |
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57 // pass on other buttons to base class |
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58 QCheckBox::mousePressEvent(event); |
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59 } |
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60 } |
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61 //! [0] |
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62 |
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63 class MyWidget : public QWidget |
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64 { |
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65 public: |
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66 bool event(QEvent *event); |
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67 }; |
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68 |
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69 static const int MyCustomEventType = 1099; |
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70 |
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71 class MyCustomEvent : public QEvent |
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72 { |
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73 public: |
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74 MyCustomEvent() : QEvent((QEvent::Type)MyCustomEventType) {} |
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75 }; |
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76 |
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77 //! [1] |
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78 bool MyWidget::event(QEvent *event) |
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79 { |
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80 if (event->type() == QEvent::KeyPress) { |
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81 QKeyEvent *ke = static_cast<QKeyEvent *>(event); |
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82 if (ke->key() == Qt::Key_Tab) { |
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83 // special tab handling here |
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84 return true; |
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85 } |
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86 } else if (event->type() == MyCustomEventType) { |
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87 MyCustomEvent *myEvent = static_cast<MyCustomEvent *>(event); |
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88 // custom event handling here |
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89 return true; |
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90 } |
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91 |
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92 return QWidget::event(event); |
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93 } |
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94 //! [1] |
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95 |
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96 int main() |
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97 { |
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98 } |