1 | /****************************************************************************
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2 | **
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3 | ** Copyright (C) 2009 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 examples of the Qt Toolkit.
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8 | **
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9 | ** $QT_BEGIN_LICENSE:LGPL$
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10 | ** Commercial Usage
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11 | ** Licensees holding valid Qt Commercial licenses may use this file in
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12 | ** accordance with the Qt Commercial License Agreement provided with the
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13 | ** Software or, alternatively, in accordance with the terms contained in
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14 | ** a written agreement between you and Nokia.
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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 | ** GNU General Public License Usage
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29 | ** Alternatively, this file may be used under the terms of the GNU
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30 | ** General Public License version 3.0 as published by the Free Software
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31 | ** Foundation and appearing in the file LICENSE.GPL included in the
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32 | ** packaging of this file. Please review the following information to
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33 | ** ensure the GNU General Public License version 3.0 requirements will be
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34 | ** met: http://www.gnu.org/copyleft/gpl.html.
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35 | **
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36 | ** If you have questions regarding the use of this file, please contact
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37 | ** Nokia at [email protected].
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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 "informationwindow.h"
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43 | #include "imageitem.h"
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44 | #include "view.h"
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45 |
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46 | //! [0]
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47 | View::View(const QString &offices, const QString &images, QWidget *parent)
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48 | : QGraphicsView(parent)
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49 | {
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50 | officeTable = new QSqlRelationalTableModel(this);
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51 | officeTable->setTable(offices);
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52 | officeTable->setRelation(1, QSqlRelation(images, "locationid", "file"));
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53 | officeTable->select();
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54 | //! [0]
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55 |
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56 | //! [1]
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57 | scene = new QGraphicsScene(this);
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58 | scene->setSceneRect(0, 0, 465, 615);
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59 | setScene(scene);
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60 |
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61 | addItems();
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62 |
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63 | QGraphicsPixmapItem *logo = scene->addPixmap(QPixmap(":/logo.png"));
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64 | logo->setPos(30, 515);
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65 |
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66 | #ifndef Q_OS_SYMBIAN
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67 | setMinimumSize(470, 620);
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68 | setMaximumSize(470, 620);
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69 | #else
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70 | setDragMode(QGraphicsView::ScrollHandDrag);
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71 | #endif
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72 |
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73 | setWindowTitle(tr("Offices World Wide"));
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74 | }
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75 | //! [1]
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76 |
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77 | //! [3]
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78 | void View::addItems()
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79 | {
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80 | int officeCount = officeTable->rowCount();
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81 |
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82 | int imageOffset = 150;
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83 | int leftMargin = 70;
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84 | int topMargin = 40;
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85 |
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86 | for (int i = 0; i < officeCount; i++) {
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87 | ImageItem *image;
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88 | QGraphicsTextItem *label;
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89 | QSqlRecord record = officeTable->record(i);
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90 |
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91 | int id = record.value("id").toInt();
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92 | QString file = record.value("file").toString();
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93 | QString location = record.value("location").toString();
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94 |
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95 | int columnOffset = ((i / 3) * 37);
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96 | int x = ((i / 3) * imageOffset) + leftMargin + columnOffset;
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97 | int y = ((i % 3) * imageOffset) + topMargin;
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98 |
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99 | image = new ImageItem(id, QPixmap(":/" + file));
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100 | image->setData(0, i);
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101 | image->setPos(x, y);
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102 | scene->addItem(image);
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103 |
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104 | label = scene->addText(location);
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105 | QPointF labelOffset((150 - label->boundingRect().width()) / 2, 120.0);
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106 | label->setPos(QPointF(x, y) + labelOffset);
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107 | }
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108 | }
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109 | //! [3]
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110 |
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111 | //! [5]
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112 | void View::mouseReleaseEvent(QMouseEvent *event)
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113 | {
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114 | if (QGraphicsItem *item = itemAt(event->pos())) {
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115 | if (ImageItem *image = qgraphicsitem_cast<ImageItem *>(item))
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116 | showInformation(image);
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117 | }
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118 | QGraphicsView::mouseReleaseEvent(event);
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119 | }
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120 | //! [5]
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121 |
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122 | //! [6]
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123 | void View::showInformation(ImageItem *image)
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124 | {
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125 | int id = image->id();
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126 | if (id < 0 || id >= officeTable->rowCount())
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127 | return;
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128 |
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129 | InformationWindow *window = findWindow(id);
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130 | if (window && window->isVisible()) {
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131 | window->raise();
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132 | window->activateWindow();
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133 | } else if (window && !window->isVisible()) {
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134 | #ifndef Q_OS_SYMBIAN
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135 | window->show();
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136 | #else
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137 | window->showMaximized();
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138 | #endif
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139 | } else {
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140 | InformationWindow *window;
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141 | window = new InformationWindow(id, officeTable, this);
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142 |
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143 | connect(window, SIGNAL(imageChanged(int,QString)),
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144 | this, SLOT(updateImage(int,QString)));
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145 |
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146 | #ifndef Q_OS_SYMBIAN
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147 | window->move(pos() + QPoint(20, 40));
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148 | window->show();
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149 | #else
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150 | window->showMaximized();
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151 | #endif
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152 | informationWindows.append(window);
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153 | }
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154 | }
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155 | //! [6]
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156 |
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157 | //! [7]
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158 | void View::updateImage(int id, const QString &fileName)
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159 | {
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160 | QList<QGraphicsItem *> items = scene->items();
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161 |
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162 | while(!items.empty()) {
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163 | QGraphicsItem *item = items.takeFirst();
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164 |
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165 | if (ImageItem *image = qgraphicsitem_cast<ImageItem *>(item)) {
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166 | if (image->id() == id){
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167 | image->setPixmap(QPixmap(":/" +fileName));
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168 | image->adjust();
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169 | break;
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170 | }
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171 | }
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172 | }
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173 | }
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174 | //! [7]
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175 |
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176 | //! [8]
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177 | InformationWindow* View::findWindow(int id)
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178 | {
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179 | QList<InformationWindow*>::iterator i, beginning, end;
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180 |
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181 | beginning = informationWindows.begin();
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182 | end = informationWindows.end();
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183 |
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184 | for (i = beginning; i != end; ++i) {
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185 | InformationWindow *window = (*i);
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186 | if (window && (window->id() == id))
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187 | return window;
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188 | }
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189 | return 0;
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190 | }
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191 | //! [8]
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192 |
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