class QTabWidget

The QTabWidget class provides a stack of tabbed widgets. More…

Synopsis

Properties

• countᅟ - The number of tabs in the tab bar

• currentIndexᅟ - The index position of the current tab page

• documentModeᅟ - Whether or not the tab widget is rendered in a mode suitable for document pages. This is the same as document mode on macOS

• elideModeᅟ - How to elide text in the tab bar

• iconSizeᅟ - Size for icons in the tab bar

• movableᅟ - This property holds whether the user can move the tabs within the tabbar area

• tabBarAutoHideᅟ - If true, the tab bar is automatically hidden when it contains less than 2 tabs

• tabPositionᅟ - The position of the tabs in this tab widget

• tabShapeᅟ - The shape of the tabs in this tab widget

• tabsClosableᅟ - Whether close buttons are automatically added to each tab

• usesScrollButtonsᅟ - Whether or not a tab bar should use buttons to scroll tabs when it has many tabs

Methods

• def __init__()

• def addTab()

• def clear()

• def cornerWidget()

• def count()

• def currentIndex()

• def currentWidget()

• def documentMode()

• def elideMode()

• def iconSize()

• def indexOf()

• def insertTab()

• def isMovable()

• def isTabEnabled()

• def isTabVisible()

• def removeTab()

• def setCornerWidget()

• def setDocumentMode()

• def setElideMode()

• def setIconSize()

• def setMovable()

• def setTabBar()

• def setTabBarAutoHide()

• def setTabEnabled()

• def setTabIcon()

• def setTabPosition()

• def setTabShape()

• def setTabText()

• def setTabToolTip()

• def setTabVisible()

• def setTabWhatsThis()

• def setTabsClosable()

• def setUsesScrollButtons()

• def tabBar()

• def tabBarAutoHide()

• def tabIcon()

• def tabPosition()

• def tabShape()

• def tabText()

• def tabToolTip()

• def tabWhatsThis()

• def tabsClosable()

• def usesScrollButtons()

• def widget()

Virtual methods

• def initStyleOption()

• def tabInserted()

• def tabRemoved()

Slots

• def setCurrentIndex()

• def setCurrentWidget()

Signals

• def currentChanged()

• def tabBarClicked()

• def tabBarDoubleClicked()

• def tabCloseRequested()

Note

This documentation may contain snippets that were automatically translated from C++ to Python. We always welcome contributions to the snippet translation. If you see an issue with the translation, you can also let us know by creating a ticket on https:/bugreports.qt.io/projects/PYSIDE

Detailed Description

A tab widget provides a tab bar (see QTabBar ) and a “page area” that is used to display pages related to each tab. By default, the tab bar is shown above the page area, but different configurations are available (see TabPosition ). Each tab is associated with a different widget (called a page). Only the current page is shown in the page area; all the other pages are hidden. The user can show a different page by clicking on its tab or by pressing its Alt+*letter* shortcut if it has one.

The normal way to use QTabWidget is to do the following:

1. Create a QTabWidget .

2. Create a QWidget for each of the pages in the tab dialog, but do not specify parent widgets for them.

3. Insert child widgets into the page widget, using layouts to position them as normal.

4. Call addTab() or insertTab() to put the page widgets into the tab widget, giving each tab a suitable label with an optional keyboard shortcut.

The position of the tabs is defined by tabPosition , their shape by tabShape .

The signal currentChanged() is emitted when the user selects a page.

The current page index is available as currentIndex() , the current page widget with currentWidget() . You can retrieve a pointer to a page widget with a given index using widget() , and can find the index position of a widget with indexOf() . Use setCurrentWidget() or setCurrentIndex() to show a particular page.

You can change a tab’s text and icon using setTabText() or setTabIcon() . A tab and its associated page can be removed with removeTab() .

Each tab is either enabled or disabled at any given time (see setTabEnabled() ). If a tab is enabled, the tab text is drawn normally and the user can select that tab. If it is disabled, the tab is drawn in a different way and the user cannot select that tab. Note that even if a tab is disabled, the page can still be visible, for example if all of the tabs happen to be disabled.

Tab widgets can be a very good way to split up a complex dialog. An alternative is to use a QStackedWidget for which you provide some means of navigating between pages, for example, a QToolBar or a QListWidget .

Most of the functionality in QTabWidget is provided by a QTabBar (at the top, providing the tabs) and a QStackedWidget (most of the area, organizing the individual pages).

See also

QTabBar QStackedWidget QToolBox Tab Dialog Example

class TabPosition

This enum type defines where QTabWidget draws the tab row:

Constant	Description
QTabWidget.North	The tabs are drawn above the pages.
QTabWidget.South	The tabs are drawn below the pages.
QTabWidget.West	The tabs are drawn to the left of the pages.
QTabWidget.East	The tabs are drawn to the right of the pages.

class TabShape

This enum type defines the shape of the tabs:

Constant	Description
QTabWidget.Rounded	The tabs are drawn with a rounded look. This is the default shape.
QTabWidget.Triangular	The tabs are drawn with a triangular look.

Note

Properties can be used directly when from __feature__ import true_property is used or via accessor functions otherwise.

property countᅟ: int

This property holds the number of tabs in the tab bar.

By default, this property contains a value of 0.

Access functions:

• count()

property currentIndexᅟ: int

This property holds the index position of the current tab page.

The current index is -1 if there is no current widget.

By default, this property contains a value of -1 because there are initially no tabs in the widget.

Access functions:

• currentIndex()

• setCurrentIndex()

• Signal currentChanged()

property documentModeᅟ: bool

This property holds Whether or not the tab widget is rendered in a mode suitable for document pages. This is the same as document mode on macOS..

When this property is set the tab widget frame is not rendered. This mode is useful for showing document-type pages where the page covers most of the tab widget area.

See also

elideMode documentMode usesScrollButtons SH_TabBar_PreferNoArrows

Access functions:

• documentMode()

• setDocumentMode()

property elideModeᅟ: Qt.TextElideMode

This property holds how to elide text in the tab bar.

This property controls how items are elided when there is not enough space to show them for a given tab bar size.

By default the value is style dependent.

See also

elideMode usesScrollButtons SH_TabBar_ElideMode

Access functions:

• elideMode()

• setElideMode()

property iconSizeᅟ: QSize

This property holds The size for icons in the tab bar.

The default value is style-dependent. This is the maximum size that the icons will have. Icons are not scaled up if they are of smaller size.

See also

iconSize

Access functions:

• iconSize()

• setIconSize()

property movableᅟ: bool

This property holds This property holds whether the user can move the tabs within the tabbar area..

By default, this property is false;

Access functions:

• isMovable()

• setMovable()

property tabBarAutoHideᅟ: bool

This property holds If true, the tab bar is automatically hidden when it contains less than 2 tabs..

By default, this property is false.

See also

visible

Access functions:

• tabBarAutoHide()

• setTabBarAutoHide()

property tabPositionᅟ: QTabWidget.TabPosition

This property holds the position of the tabs in this tab widget.

Possible values for this property are described by the TabPosition enum.

By default, this property is set to North .

See also

TabPosition

Access functions:

• tabPosition()

• setTabPosition()

property tabShapeᅟ: QTabWidget.TabShape

This property holds the shape of the tabs in this tab widget.

Possible values for this property are Rounded (default) or Triangular .

See also

TabShape

Access functions:

• tabShape()

• setTabShape()

property tabsClosableᅟ: bool

This property holds whether close buttons are automatically added to each tab..

See also

tabsClosable()

Access functions:

• tabsClosable()

• setTabsClosable()

property usesScrollButtonsᅟ: bool

This property holds Whether or not a tab bar should use buttons to scroll tabs when it has many tabs..

When there are too many tabs in a tab bar for its size, the tab bar can either choose to expand its size or to add buttons that allow you to scroll through the tabs.

By default the value is style dependent.

See also

elideMode usesScrollButtons SH_TabBar_PreferNoArrows

Access functions:

• usesScrollButtons()

• setUsesScrollButtons()

__init__([parent=None])

Parameters:

parent – QWidget

Constructs a tabbed widget with parent parent.

addTab(widget, arg__2)

Parameters:

• widget – QWidget

• arg__2 – str

Return type:

int

Adds a tab with the given page and label to the tab widget, and returns the index of the tab in the tab bar. Ownership of page is passed on to the QTabWidget .

If the tab’s label contains an ampersand, the letter following the ampersand is used as a shortcut for the tab, e.g. if the label is “Bro&wse” then Alt+W becomes a shortcut which will move the focus to this tab.

Note

If you call addTab() after show() , the layout system will try to adjust to the changes in its widgets hierarchy and may cause flicker. To prevent this, you can set the updatesEnabled property to false prior to changes; remember to set the property to true when the changes are done, making the widget receive paint events again.

See also

insertTab()

addTab(widget, icon, label)

Parameters:

• widget – QWidget

• icon – QIcon

• label – str

Return type:

int

This is an overloaded function.

Adds a tab with the given page, icon, and label to the tab widget, and returns the index of the tab in the tab bar. Ownership of page is passed on to the QTabWidget .

This function is the same as addTab() , but with an additional icon.

clear()

Removes all the pages, but does not delete them. Calling this function is equivalent to calling removeTab() until the tab widget is empty.

cornerWidget([corner=Qt.TopRightCorner])

Parameters:

corner – Corner

Return type:

QWidget

Returns the widget shown in the corner of the tab widget or None.

See also

setCornerWidget()

count()

Return type:

int

Getter of property countᅟ .

currentChanged(index)

Parameters:

index – int

This signal is emitted whenever the current page index changes. The parameter is the new current page index position, or -1 if there isn’t a new one (for example, if there are no widgets in the QTabWidget )

See also

currentWidget() currentIndex

Notification signal of property currentIndexᅟ .

currentIndex()

Return type:

int

See also

setCurrentIndex()

Getter of property currentIndexᅟ .

currentWidget()

Return type:

QWidget

Returns a pointer to the page currently being displayed by the tab dialog. The tab dialog does its best to make sure that this value is never 0 (but if you try hard enough, it can be).

See also

currentIndex() setCurrentWidget()

documentMode()

Return type:

bool

See also

setDocumentMode()

Getter of property documentModeᅟ .

elideMode()

Return type:

TextElideMode

See also

setElideMode()

Getter of property elideModeᅟ .

iconSize()

Return type:

QSize

See also

setIconSize()

Getter of property iconSizeᅟ .

indexOf(widget)

Parameters:

widget – QWidget

Return type:

int

Returns the index position of the page occupied by the widget w, or -1 if the widget cannot be found.

initStyleOption(option)

Parameters:

option – QStyleOptionTabWidgetFrame

Initialize option with the values from this QTabWidget . This method is useful for subclasses when they need a QStyleOptionTabWidgetFrame , but don’t want to fill in all the information themselves.

See also

initFrom() initStyleOption()

insertTab(index, widget, arg__3)

Parameters:

• index – int

• widget – QWidget

• arg__3 – str

Return type:

int

Inserts a tab with the given label and page into the tab widget at the specified index, and returns the index of the inserted tab in the tab bar. Ownership of page is passed on to the QTabWidget .

The label is displayed in the tab and may vary in appearance depending on the configuration of the tab widget.

If the tab’s label contains an ampersand, the letter following the ampersand is used as a shortcut for the tab, e.g. if the label is “Bro&wse” then Alt+W becomes a shortcut which will move the focus to this tab.

If index is out of range, the tab is simply appended. Otherwise it is inserted at the specified position.

If the QTabWidget was empty before this function is called, the new page becomes the current page. Inserting a new tab at an index less than or equal to the current index will increment the current index, but keep the current page.

Note

If you call insertTab() after show() , the layout system will try to adjust to the changes in its widgets hierarchy and may cause flicker. To prevent this, you can set the updatesEnabled property to false prior to changes; remember to set the property to true when the changes are done, making the widget receive paint events again.

See also

addTab()

insertTab(index, widget, icon, label)

Parameters:

• index – int

• widget – QWidget

• icon – QIcon

• label – str

Return type:

int

This is an overloaded function.

Inserts a tab with the given label, page, and icon into the tab widget at the specified index, and returns the index of the inserted tab in the tab bar. Ownership of page is passed on to the QTabWidget .

This function is the same as insertTab() , but with an additional icon.

isMovable()

Return type:

bool

Getter of property movableᅟ .

isTabEnabled(index)

Parameters:

index – int

Return type:

bool

Returns true if the page at position index is enabled; otherwise returns false.

See also

setTabEnabled() isEnabled()

isTabVisible(index)

Parameters:

index – int

Return type:

bool

Returns true if the page at position index is visible; otherwise returns false.

See also

setTabVisible()

removeTab(index)

Parameters:

index – int

Removes the tab at position index from this stack of widgets. The page widget itself is not deleted.

See also

addTab() insertTab()

setCornerWidget(w[, corner=Qt.TopRightCorner])

Parameters:

• w – QWidget

• corner – Corner

Sets the given widget to be shown in the specified corner of the tab widget. The geometry of the widget is determined based on the widget’s sizeHint() and the style() .

Only the horizontal element of the corner will be used.

Passing None shows no widget in the corner.

Any previously set corner widget is hidden.

All widgets set here will be deleted by the tab widget when it is destroyed unless you separately reparent the widget after setting some other corner widget (or None).

Note: Corner widgets are designed for North and South tab positions; other orientations are known to not work properly.

See also

cornerWidget() setTabPosition()

setCurrentIndex(index)

Parameters:

index – int

See also

currentIndex()

Setter of property currentIndexᅟ .

setCurrentWidget(widget)

Parameters:

widget – QWidget

Makes widget the current widget. The widget used must be a page in this tab widget.

See also

addTab() setCurrentIndex() currentWidget()

setDocumentMode(set)

Parameters:

set – bool

See also

documentMode()

Setter of property documentModeᅟ .

setElideMode(mode)

Parameters:

mode – TextElideMode

See also

elideMode()

Setter of property elideModeᅟ .

setIconSize(size)

Parameters:

size – QSize

See also

iconSize()

Setter of property iconSizeᅟ .

setMovable(movable)

Parameters:

movable – bool

See also

isMovable()

Setter of property movableᅟ .

setTabBar(arg__1)

Parameters:

arg__1 – QTabBar

Replaces the dialog’s QTabBar heading with the tab bar tb. Note that this must be called before any tabs have been added, or the behavior is undefined.

See also

tabBar()

setTabBarAutoHide(enabled)

Parameters:

enabled – bool

See also

tabBarAutoHide()

Setter of property tabBarAutoHideᅟ .

setTabEnabled(index, enabled)

Parameters:

• index – int

• enabled – bool

If enable is true, the page at position index is enabled; otherwise the page at position index is disabled. The page’s tab is redrawn appropriately.

QTabWidget uses setEnabled() internally, rather than keeping a separate flag.

Note that even a disabled tab/page may be visible. If the page is visible already, QTabWidget will not hide it; if all the pages are disabled, QTabWidget will show one of them.

See also

isTabEnabled() setEnabled()

setTabIcon(index, icon)

Parameters:

• index – int

• icon – QIcon

Sets the icon for the tab at position index.

See also

tabIcon()

setTabPosition(position)

Parameters:

position – TabPosition

See also

tabPosition()

Setter of property tabPositionᅟ .

setTabShape(s)

Parameters:

s – TabShape

See also

tabShape()

Setter of property tabShapeᅟ .

setTabText(index, text)

Parameters:

• index – int

• text – str

Defines a new label for the page at position index's tab.

If the provided text contains an ampersand character (’&’), a shortcut is automatically created for it. The character that follows the ‘&’ will be used as the shortcut key. Any previous shortcut will be overwritten, or cleared if no shortcut is defined by the text. See the QShortcut documentation for details (to display an actual ampersand, use ‘&&’).

See also

tabText()

setTabToolTip(index, tip)

Parameters:

• index – int

• tip – str

Sets the tab tool tip for the page at position index to tip.

See also

tabToolTip()

setTabVisible(index, visible)

Parameters:

• index – int

• visible – bool

If visible is true, the page at position index is visible; otherwise the page at position index is hidden. The page’s tab is redrawn appropriately.

See also

isTabVisible()

setTabWhatsThis(index, text)

Parameters:

• index – int

• text – str

Sets the What’s This help text for the page at position index to text.

See also

tabWhatsThis()

setTabsClosable(closeable)

Parameters:

closeable – bool

See also

tabsClosable()

Setter of property tabsClosableᅟ .

setUsesScrollButtons(useButtons)

Parameters:

useButtons – bool

See also

usesScrollButtons()

Setter of property usesScrollButtonsᅟ .

tabBar()

Return type:

QTabBar

Returns the current QTabBar .

See also

setTabBar()

tabBarAutoHide()

Return type:

bool

See also

setTabBarAutoHide()

Getter of property tabBarAutoHideᅟ .

tabBarClicked(index)

Parameters:

index – int

This signal is emitted when user clicks on a tab at an index.

index refers to the tab clicked, or -1 if no tab is under the cursor.

tabBarDoubleClicked(index)

Parameters:

index – int

This signal is emitted when the user double clicks on a tab at an index.

index is the index of a clicked tab, or -1 if no tab is under the cursor.

tabCloseRequested(index)

Parameters:

index – int

This signal is emitted when the close button on a tab is clicked. The index is the index that should be removed.

See also

setTabsClosable()

tabIcon(index)

Parameters:

index – int

Return type:

QIcon

Returns the icon for the tab on the page at position index.

See also

setTabIcon()

tabInserted(index)

Parameters:

index – int

This virtual handler is called after a new tab was added or inserted at position index.

See also

tabRemoved()

tabPosition()

Return type:

TabPosition

See also

setTabPosition()

Getter of property tabPositionᅟ .

tabRemoved(index)

Parameters:

index – int

This virtual handler is called after a tab was removed from position index.

See also

tabInserted()

tabShape()

Return type:

TabShape

See also

setTabShape()

Getter of property tabShapeᅟ .

tabText(index)

Parameters:

index – int

Return type:

str

Returns the label text for the tab on the page at position index.

See also

setTabText()

tabToolTip(index)

Parameters:

index – int

Return type:

str

Returns the tab tool tip for the page at position index or an empty string if no tool tip has been set.

See also

setTabToolTip()

tabWhatsThis(index)

Parameters:

index – int

Return type:

str

Returns the What’s This help text for the page at position index, or an empty string if no help text has been set.

See also

setTabWhatsThis()

tabsClosable()

Return type:

bool

See also

setTabsClosable()

Getter of property tabsClosableᅟ .

usesScrollButtons()

Return type:

bool

See also

setUsesScrollButtons()

Getter of property usesScrollButtonsᅟ .

widget(index)

Parameters:

index – int

Return type:

QWidget

Returns the tab page at index position index or None if the index is out of range.