1 | /****************************************************************************
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2 | **
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3 | ** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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4 | ** All rights reserved.
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5 | ** Contact: Nokia Corporation ([email protected])
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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 | ** $QT_BEGIN_LICENSE:BSD$
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10 | ** You may use this file under the terms of the BSD license as follows:
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11 | **
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12 | ** "Redistribution and use in source and binary forms, with or without
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13 | ** modification, are permitted provided that the following conditions are
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14 | ** met:
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15 | ** * Redistributions of source code must retain the above copyright
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16 | ** notice, this list of conditions and the following disclaimer.
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17 | ** * Redistributions in binary form must reproduce the above copyright
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18 | ** notice, this list of conditions and the following disclaimer in
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19 | ** the documentation and/or other materials provided with the
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20 | ** distribution.
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21 | ** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
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22 | ** the names of its contributors may be used to endorse or promote
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23 | ** products derived from this software without specific prior written
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24 | ** permission.
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25 | **
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26 | ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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27 | ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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28 | ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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29 | ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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30 | ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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31 | ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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32 | ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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33 | ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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34 | ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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35 | ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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36 | ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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37 | ** $QT_END_LICENSE$
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38 | **
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39 | ****************************************************************************/
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40 |
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41 | //! [0]
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42 | Q_PROPERTY(type name
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43 | READ getFunction
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44 | [WRITE setFunction]
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45 | [RESET resetFunction]
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46 | [NOTIFY notifySignal]
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47 | [DESIGNABLE bool]
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48 | [SCRIPTABLE bool]
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49 | [STORED bool]
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50 | [USER bool]
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51 | [CONSTANT]
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52 | [FINAL])
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53 | //! [0]
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54 |
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55 |
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56 | //! [1]
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57 | Q_PROPERTY(bool focus READ hasFocus)
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58 | Q_PROPERTY(bool enabled READ isEnabled WRITE setEnabled)
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59 | Q_PROPERTY(QCursor cursor READ cursor WRITE setCursor RESET unsetCursor)
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60 | //! [1]
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61 |
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62 |
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63 | //! [2]
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64 | Q_PROPERTY(QDate date READ getDate WRITE setDate)
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65 | //! [2]
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66 |
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67 |
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68 | //! [3]
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69 | QPushButton *button = new QPushButton;
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70 | QObject *object = button;
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71 |
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72 | button->setDown(true);
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73 | object->setProperty("down", true);
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74 | //! [3]
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75 |
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76 |
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77 | //! [4]
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78 | QObject *object = ...
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79 | const QMetaObject *metaobject = object->metaObject();
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80 | int count = metaobject->propertyCount();
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81 | for (int i=0; i<count; ++i) {
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82 | QMetaProperty metaproperty = metaobject->property(i);
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83 | const char *name = metaproperty.name();
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84 | QVariant value = object->property(name);
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85 | ...
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86 | }
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87 | //! [4]
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88 |
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89 |
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90 | //! [5]
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91 | class MyClass : public QObject
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92 | {
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93 | Q_OBJECT
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94 | Q_PROPERTY(Priority priority READ priority WRITE setPriority NOTIFY priorityChanged)
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95 | Q_ENUMS(Priority)
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96 |
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97 | public:
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98 | MyClass(QObject *parent = 0);
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99 | ~MyClass();
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100 |
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101 | enum Priority { High, Low, VeryHigh, VeryLow };
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102 |
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103 | void setPriority(Priority priority)
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104 | {
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105 | m_priority = priority;
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106 | emit priorityChanged(priority);
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107 | }
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108 | Priority priority() const
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109 | { return m_priority; }
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110 |
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111 | signals:
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112 | void priorityChanged(Priority);
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113 |
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114 | private:
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115 | Priority m_priority;
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116 | };
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117 | //! [5]
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118 |
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119 |
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120 | //! [6]
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121 | MyClass *myinstance = new MyClass;
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122 | QObject *object = myinstance;
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123 |
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124 | myinstance->setPriority(MyClass::VeryHigh);
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125 | object->setProperty("priority", "VeryHigh");
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126 | //! [6]
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127 |
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128 |
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129 | //! [7]
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130 | Q_CLASSINFO("Version", "3.0.0")
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131 | //! [7]
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