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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 <QtGui> |
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43 |
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44 class Updater : public QObject |
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45 { |
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46 Q_OBJECT |
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47 |
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48 public: |
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49 Updater(QWidget *widget); |
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50 |
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51 public slots: |
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52 void adjustSize(); |
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53 |
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54 private: |
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55 QWidget *widget; |
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56 }; |
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57 |
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58 Updater::Updater(QWidget *widget) |
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59 : widget(widget) |
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60 { |
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61 } |
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62 |
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63 void Updater::adjustSize() |
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64 { |
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65 widget->adjustSize(); |
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66 } |
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67 |
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68 int main(int argc, char *argv[]) |
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69 { |
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70 QApplication app(argc, argv); |
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71 QLabel *label = new QLabel("My label"); |
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72 QLineEdit *editor = new QLineEdit("New text"); |
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73 QWidget window; |
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74 //Updater updater(&label); |
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75 QObject::connect(editor, SIGNAL(textChanged(const QString &)), |
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76 label, SLOT(setText(const QString &))); |
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77 //QObject::connect(editor, SIGNAL(textChanged(const QString &)), |
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78 // &updater, SLOT(adjustSize())); |
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79 //editor.show(); |
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80 //label.show(); |
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81 QVBoxLayout *layout = new QVBoxLayout; |
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82 layout->addWidget(label); |
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83 layout->addWidget(editor); |
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84 window.setLayout(layout); |
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85 window.show(); |
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86 return app.exec(); |
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87 } |
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88 |
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89 #include "main.moc" |