QTabBar Class

成员函数

QTabBar::QTabBar(QWidget *parent = Q_NULLPTR)

Creates a new tab bar with the given parent.

QTabBar::~QTabBar()

Destroys the tab bar.

QString QTabBar::accessibleTabName(int index) const

Returns the accessibleName of the tab at position index, or an empty string if index is out of range.

参见 setAccessibleTabName().

int QTabBar::addTab(const QString &text)

Adds a new tab with text text. Returns the new tab's index.

int QTabBar::addTab(const QIcon &icon, const QString &text)

This is an overloaded function.

Adds a new tab with icon icon and text text. Returns the new tab's index.

[virtual protected] void QTabBar::changeEvent(QEvent *event)

重新实现 QWidget::changeEvent().

[signal] void QTabBar::currentChanged(int index)

This signal is emitted when the tab bar's current tab changes. The new current has the given index, or -1 if there isn't a new one (for example, if there are no tab in the QTabBar)

Note: Notifier signal for property currentIndex.

[virtual protected] bool QTabBar::event(QEvent *event)

重新实现 QObject::event().

[virtual protected] void QTabBar::hideEvent(QHideEvent *)

重新实现 QWidget::hideEvent().

[protected] void QTabBar::initStyleOption(QStyleOptionTab *option, int tabIndex) const

Initialize option with the values from the tab at tabIndex. This method is useful for subclasses when they need a QStyleOptionTab, but don't want to fill in all the information themselves.

参见 QStyleOption::initFrom() and QTabWidget::initStyleOption().

int QTabBar::insertTab(int index, const QString &text)

Inserts a new tab with text text at position index. If index is out of range, the new tab is appened. Returns the new tab's index.

int QTabBar::insertTab(int index, const QIcon &icon, const QString &text)

This is an overloaded function.

Inserts a new tab with icon icon and text text at position index. If index is out of range, the new tab is appended. Returns the new tab's index.

If the QTabBar was empty before this function is called, the inserted tab becomes the current tab.

Inserting a new tab at an index less than or equal to the current index will increment the current index, but keep the current tab.

bool QTabBar::isTabEnabled(int index) const

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

[virtual protected] void QTabBar::keyPressEvent(QKeyEvent *event)

重新实现 QWidget::keyPressEvent().

[virtual] QSize QTabBar::minimumSizeHint() const

重新实现 QWidget::minimumSizeHint().

[virtual protected] QSize QTabBar::minimumTabSizeHint(int index) const

Returns the minimum tab size hint for the tab at position index.

This function was introduced in Qt 5.0.

[virtual protected] void QTabBar::mouseMoveEvent(QMouseEvent *event)

重新实现 QWidget::mouseMoveEvent().

[virtual protected] void QTabBar::mousePressEvent(QMouseEvent *event)

重新实现 QWidget::mousePressEvent().

[virtual protected] void QTabBar::mouseReleaseEvent(QMouseEvent *event)

重新实现 QWidget::mouseReleaseEvent().

void QTabBar::moveTab(int from, int to)

Moves the item at index position from to index position to.

This function was introduced in Qt 4.5.

参见 tabMoved() and tabLayoutChange().

[virtual protected] void QTabBar::paintEvent(QPaintEvent *)

重新实现 QWidget::paintEvent().

void QTabBar::removeTab(int index)

Removes the tab at position index.

参见 SelectionBehavior.

[virtual protected] void QTabBar::resizeEvent(QResizeEvent *)

重新实现 QWidget::resizeEvent().

void QTabBar::setAccessibleTabName(int index, const QString &name)

Sets the accessibleName of the tab at position index to name.

参见 accessibleTabName().

void QTabBar::setTabButton(int index, ButtonPosition position, QWidget *widget)

Sets widget on the tab index. The widget is placed on the left or right hand side depending upon the position.

Any previously set widget in position is hidden.

The tab bar will take ownership of the widget and so all widgets set here will be deleted by the tab bar when it is destroyed unless you separately reparent the widget after setting some other widget (or 0).

This function was introduced in Qt 4.5.

参见 tabButton() and tabsClosable().

void QTabBar::setTabData(int index, const QVariant &data)

Sets the data of the tab at position index to data.

参见 tabData().

void QTabBar::setTabEnabled(int index, bool enabled)

If enabled is true then the tab at position index is enabled; otherwise the item at position index is disabled.

参见 isTabEnabled().

void QTabBar::setTabIcon(int index, const QIcon &icon)

Sets the icon of the tab at position index to icon.

参见 tabIcon().

void QTabBar::setTabText(int index, const QString &text)

Sets the text of the tab at position index to text.

参见 tabText().

void QTabBar::setTabTextColor(int index, const QColor &color)

Sets the color of the text in the tab with the given index to the specified color.

If an invalid color is specified, the tab will use the QTabBar foreground role instead.

参见 tabTextColor().

void QTabBar::setTabToolTip(int index, const QString &tip)

Sets the tool tip of the tab at position index to tip.

参见 tabToolTip().

void QTabBar::setTabWhatsThis(int index, const QString &text)

Sets the What's This help text of the tab at position index to text.

This function was introduced in Qt 4.1.

参见 tabWhatsThis().

[virtual protected] void QTabBar::showEvent(QShowEvent *)

重新实现 QWidget::showEvent().

[virtual] QSize QTabBar::sizeHint() const

重新实现 QWidget::sizeHint().

int QTabBar::tabAt(const QPoint &position) const

Returns the index of the tab that covers position or -1 if no tab covers position;

This function was introduced in Qt 4.3.

[signal] void QTabBar::tabBarClicked(int index)

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

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

This function was introduced in Qt 5.2.

[signal] void QTabBar::tabBarDoubleClicked(int index)

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

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

This function was introduced in Qt 5.2.

QWidget *QTabBar::tabButton(int index, ButtonPosition position) const

Returns the widget set a tab index and position or 0 if one is not set.

参见 setTabButton().

[signal] void QTabBar::tabCloseRequested(int index)

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

This function was introduced in Qt 4.5.

参见 setTabsClosable().

QVariant QTabBar::tabData(int index) const

Returns the data of the tab at position index, or a null variant if index is out of range.

参见 setTabData().

QIcon QTabBar::tabIcon(int index) const

Returns the icon of the tab at position index, or a null icon if index is out of range.

参见 setTabIcon().

[virtual protected] void QTabBar::tabInserted(int index)

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

参见 tabRemoved().

[virtual protected] void QTabBar::tabLayoutChange()

This virtual handler is called whenever the tab layout changes.

参见 tabRect().

[signal] void QTabBar::tabMoved(int from, int to)

This signal is emitted when the tab has moved the tab at index position from to index position to.

note: QTabWidget will automatically move the page when this signal is emitted from its tab bar.

This function was introduced in Qt 4.5.

参见 moveTab().

QRect QTabBar::tabRect(int index) const

Returns the visual rectangle of the tab at position index, or a null rectangle if index is out of range.

[virtual protected] void QTabBar::tabRemoved(int index)

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

参见 tabInserted().

[virtual protected] QSize QTabBar::tabSizeHint(int index) const

Returns the size hint for the tab at position index.

QString QTabBar::tabText(int index) const

Returns the text of the tab at position index, or an empty string if index is out of range.

参见 setTabText().

QColor QTabBar::tabTextColor(int index) const

Returns the text color of the tab with the given index, or a invalid color if index is out of range.

参见 setTabTextColor().

QString QTabBar::tabToolTip(int index) const

Returns the tool tip of the tab at position index, or an empty string if index is out of range.

参见 setTabToolTip().

QString QTabBar::tabWhatsThis(int index) const

Returns the What's This help text of the tab at position index, or an empty string if index is out of range.

This function was introduced in Qt 4.1.

参见 setTabWhatsThis().

[virtual protected] void QTabBar::timerEvent(QTimerEvent *event)

重新实现 QObject::timerEvent().

[virtual protected] void QTabBar::wheelEvent(QWheelEvent *event)

重新实现 QWidget::wheelEvent().