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The parent parameter specifies the parent widget. The default is a null pointer, meaning that the dialog has no parent. 13 signals: 14 void findNext(const QString &str, Qt::CaseSensitivity cs); 15 void findPrevious(const QString &str, Qt::CaseSensitivity cs); The signals section declares two signals that the dialog emits when the user clicks the Find button. If the Search backward option is enabled, the dialog emits findPrevious(); otherwise, it emits findNext(). The signals keyword is actually a macro.

It provides a tab bar along the top that controls a built-in QStackedWidget. A QListWidget and a QStackedWidget can be used together, with the QList-Widget's current item determining which page the QStackedWidget shows, by connecting the QListWidget::currentRowChanged() signal to the QStackedWidget::setCurrentIndex() slot. A QtreeWidget can be used with a QStackedWidget in a similar way to a QListWidget. The QStackedWidget class is covered in Chapter 6 (Layout Management). ui files at run-time.

4. Click Form|Adjust Size to resize the form to its preferred size. The red lines that appear on the form show the layouts that have been created. They don't appear when the form is run. 8. The form with the layouts Now click Edit|Edit Tab Order. A number in a blue rectangle will appear next to every widget that can accept focus. Click each widget in turn in the order you want them to accept focus, then click Edit|Edit Widgets to leave tab order mode. 9. Setting the form's tab order To preview the dialog, click the Form|Preview menu option.

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