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The QStackedWidget class provides a stack of widgets where only one widget is visible at a time. More...
Inherits QFrame.
The QStackedWidget class provides a stack of widgets where only one widget is visible at a time.
QStackedWidget can be used to create a user interface similar to the one provided by QTabWidget. It is a convenience layout widget built on top of the QStackedLayout class.
Like QStackedLayout, QStackedWidget can be constructed and populated with a number of child widgets ("pages"):
QWidget *firstPageWidget = new QWidget; QWidget *secondPageWidget = new QWidget; QWidget *thirdPageWidget = new QWidget; QStackedWidget *stackedWidget = new QStackedWidget; stackedWidget->addWidget(firstPageWidget); stackedWidget->addWidget(secondPageWidget); stackedWidget->addWidget(thirdPageWidget); QVBoxLayout *layout = new QVBoxLayout; layout->addWidget(stackedWidget); setLayout(layout);
QStackedWidget provides no intrinsic means for the user to switch page. This is typically done through a QComboBox or a QListWidget that stores the titles of the QStackedWidget's pages. For example:
QComboBox *pageComboBox = new QComboBox; pageComboBox->addItem(tr("Page 1")); pageComboBox->addItem(tr("Page 2")); pageComboBox->addItem(tr("Page 3")); connect(pageComboBox, SIGNAL(activated(int)), stackedWidget, SLOT(setCurrentIndex(int)));
When populating a stacked widget, the widgets are added to an internal list. The indexOf function returns the index of a widget in that list. The widgets can either be added to the end of the list using the addWidget function, or inserted at a given index using the insertWidget function. The removeWidget function removes the widget at the given index from the stacked widget. The number of widgets contained in the stacked widget, can be obtained using the count function.
The widget function returns the widget at a given index position. The index of the widget that is shown on screen is given by currentIndex and can be changed using setCurrentIndex. In a similar manner, the currently shown widget can be retrieved using the currentWidget function, and altered using the setCurrentWidget function.
Whenever the current widget in the stacked widget changes or a widget is removed from the stacked widget, the currentChanged and widgetRemoved signals are emitted respectively.
See also QStackedLayout, QTabWidget, and Config Dialog Example.
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