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Last change
on this file since 244 was 2, checked in by Dmitry A. Kuminov, 16 years ago |
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Initially imported qt-all-opensource-src-4.5.1 from Trolltech.
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File size:
1.2 KB
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| 1 | //! [0]
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| 2 | QT -= gui
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| 3 | //! [0]
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| 4 |
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| 5 |
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| 6 | //! [1]
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| 7 | QT += network opengl sql qt3support
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| 8 | //! [1]
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| 9 |
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| 10 |
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| 11 | //! [2]
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| 12 | CONFIG += uic3
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| 13 | //! [2]
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| 14 |
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| 15 |
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| 16 | //! [3]
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| 17 | #include <QClassName>
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| 18 | //! [3]
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| 19 |
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| 20 |
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| 21 | //! [4]
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| 22 | #include <QString>
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| 23 | #include <QApplication>
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| 24 | #include <QSqlTableModel>
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| 25 | //! [4]
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| 26 |
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| 27 |
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| 28 | //! [5]
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| 29 | #include <qclassname.h>
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| 30 | //! [5]
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| 31 |
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| 32 |
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| 33 | //! [6]
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| 34 | #include <QtCore>
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| 35 | //! [6]
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| 36 |
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| 37 |
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| 38 | //! [7]
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| 39 | using namespace Qt;
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| 40 | //! [7]
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| 41 |
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| 42 |
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| 43 | //! [8]
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| 44 | QLabel *label1 = new QLabel("Hello", this);
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| 45 | QLabel *label2 = new QLabel(this, "Hello");
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| 46 | //! [8]
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| 47 |
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| 48 |
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| 49 | //! [9]
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| 50 | MyWidget::MyWidget(QWidget *parent, const char *name)
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| 51 | : QWidget(parent, name)
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| 52 | {
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| 53 | ...
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| 54 | }
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| 55 | //! [9]
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| 56 |
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| 57 |
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| 58 | //! [10]
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| 59 | // DEPRECATED
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| 60 | if (obj->inherits("QPushButton")) {
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| 61 | QPushButton *pushButton = (QPushButton *)obj;
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| 62 | ...
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| 63 | }
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| 64 | //! [10]
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| 65 |
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| 66 |
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| 67 | //! [11]
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| 68 | QPushButton *pushButton = qobject_cast<QPushButton *>(obj);
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| 69 | if (pushButton) {
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| 70 | ...
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| 71 | }
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| 72 | //! [11]
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| 73 |
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| 74 |
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| 75 | //! [12]
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| 76 | QLabel *label = new QLabel;
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| 77 | QPointer<QLabel> safeLabel = label;
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| 78 | safeLabel->setText("Hello world!");
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| 79 | delete label;
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| 80 | // safeLabel is now 0, whereas label is a dangling pointer
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| 81 | //! [12]
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| 82 |
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| 83 |
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| 84 | //! [13]
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| 85 | QT += qt3support
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| 86 | //! [13]
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| 87 |
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| 88 |
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| 89 | //! [14]
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| 90 | DEFINES += QT3_SUPPORT
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| 91 | //! [14]
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| 92 |
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| 93 |
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| 94 | //! [15]
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| 95 | DEFINES += QT3_SUPPORT_WARNINGS
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| 96 | //! [15]
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| 97 |
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| 98 |
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| 99 | //! [16]
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| 100 | DEFINES += QT3_SUPPORT
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| 101 | //! [16]
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