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## com.trolltech.qt.gui
Class QTreeWidgetItem

    java.lang.Object
      com.trolltech.qt.QSignalEmitter
          com.trolltech.qt.QtJambiObject
              com.trolltech.qt.gui.QTreeWidgetItem

All Implemented Interfaces:
  QtJambiInterface

    public class QTreeWidgetItem

extends QtJambiObject

The `QTreeWidgetItem` class provides an item for use with the `QTreeWidget` convenience class. Tree widget items are used to hold rows of information for tree widgets. Rows usually contain several columns of data, each of which can contain a text label and an icon.

The `QTreeWidgetItem` class is a convenience class that replaces the QListViewItem class in Qt 3. It provides an item for use with the `QTreeWidget` class.

Items are usually constructed with a parent that is either a `QTreeWidget` (for top-level items) or a `QTreeWidgetItem` (for items on lower levels of the tree). For example, the following code constructs a top-level item to represent cities of the world, and adds a entry for Oslo as a child item:

            QTreeWidgetItem cities = new QTreeWidgetItem(treeWidget);
            cities.setText(0, tr("Cities"));
            QTreeWidgetItem osloItem = new QTreeWidgetItem(cities);
            osloItem.setText(0, tr("Oslo"));
            osloItem.setText(1, tr("Yes"));

Items can be added in a particular order by specifying the item they follow when they are constructed:

            QTreeWidgetItem planets = new QTreeWidgetItem(treeWidget, cities);

            planets.setText(0, tr("Planets"));

Each column in an item can have its own background brush which is set with the `setBackground()` function. The current background brush can be found with `background()`. The text label for each column can be rendered with its own font and brush. These are specified with the `setFont()` and `setForeground()` functions, and read with `font()` and `foreground()`.

The main difference between top-level items and those in lower levels of the tree is that a top-level item has no `parent()`. This information can be used to tell the difference between items, and is useful to know when inserting and removing items from the tree. Children of an item can be removed with `takeChild()` and inserted at a given index in the list of children with the `insertChild()` function.

By default, items are enabled, selectable, checkable, and can be the source of a drag and drop operation. Each item's flags can be changed by calling `setFlags()` with the appropriate value (see Qt::ItemFlags). Checkable items can be checked and unchecked with the `setCheckState()` function. The corresponding `checkState()` function indicates whether the item is currently checked.

## Subclassing

When subclassing `QTreeWidgetItem` to provide custom items, it is possible to define new types for them so that they can be distinguished from standard items. The constructors for subclasses that require this feature need to call the base class constructor with a new type value equal to or greater than `UserType` .

See also:
  `QTreeWidget`, `QTreeWidgetItemIterator`, Model/View Programming, `QListWidgetItem`, and `QTableWidgetItem`.

Nested Class Summary
`static class` | `QTreeWidgetItem.ChildIndicatorPolicy`
`static class` | `QTreeWidgetItem.ItemType` This enum describes the types that are used to describe tree widget items.

Nested classes/interfaces inherited from class com.trolltech.qt.QSignalEmitter
`QSignalEmitter.Signal0, QSignalEmitter.Signal1, QSignalEmitter.Signal2, QSignalEmitter.Signal3, QSignalEmitter.Signal4, QSignalEmitter.Signal5, QSignalEmitter.Signal6, QSignalEmitter.Signal7, QSignalEmitter.Signal8, QSignalEmitter.Signal9`

Constructor Summary
`QTreeWidgetItem()` Constructs a tree widget item of the specified `type`.
`QTreeWidgetItem(int type)` Constructs a tree widget item of the specified `type`.
`QTreeWidgetItem(java.util.List strings)` Constructs a tree widget item of the specified `type`.
`QTreeWidgetItem(java.util.List strings, int type)` Constructs a tree widget item of the specified `type`.
`QTreeWidgetItem(QTreeWidget view)` Constructs a tree widget item of the specified `type` and appends it to the items in the given `parent`.
`QTreeWidgetItem(QTreeWidget view, int type)`
`QTreeWidgetItem(QTreeWidgetItem parent)` Constructs a tree widget item and append it to the given `parent`.
`QTreeWidgetItem(QTreeWidgetItem parent, int type)` Constructs a tree widget item of the specified `type` and appends it to the items in the given `parent`.
`QTreeWidgetItem(QTreeWidgetItem parent, java.util.List strings)` Constructs a tree widget item of the specified `type` and appends it to the items in the given `parent`.
`QTreeWidgetItem(QTreeWidgetItem parent, java.util.List strings, int type)` Constructs a tree widget item of the specified `type` and appends it to the items in the given `parent`.
`QTreeWidgetItem(QTreeWidgetItem parent, QTreeWidgetItem after)` Constructs a tree widget item of the specified `type` and inserts it into the given `parent` after the `preceding` item.
`QTreeWidgetItem(QTreeWidgetItem parent, QTreeWidgetItem after, int type)` Constructs a tree widget item of the specified `type` and inserts it into the given `parent` after the `preceding` item.
`QTreeWidgetItem(QTreeWidget view, java.util.List strings)`
`QTreeWidgetItem(QTreeWidget view, java.util.List strings, int type)`
`QTreeWidgetItem(QTreeWidget view, QTreeWidgetItem after)`
`QTreeWidgetItem(QTreeWidget view, QTreeWidgetItem after, int type)`

Method Summary
`void` | `addChild(QTreeWidgetItem child)` Appends the `child` item to the list of children.
`void` | `addChildren(java.util.List children)` Appends the given list of `children` to the item.
`QBrush` | `background(int column)` Returns the brush used to render the background of the specified `column`.
`Qt.CheckState` | `checkState(int column)` Returns the check state of the label in the given `column`.
`QTreeWidgetItem` | `child(int index)` Returns the item at the given `index` in the list of the item's children.
`int` | `childCount()` Returns the number of child items.
`QTreeWidgetItem.ChildIndicatorPolicy` | `childIndicatorPolicy()` Returns the item indicator policy.
`QTreeWidgetItem` | `clone()` This method is reimplemented for internal reasons
`int` | `columnCount()` Returns the number of columns in the item.
`java.lang.Object` | `data(int column, int role)` Returns the value for the item's `column` and `role`.
`Qt.ItemFlags` | `flags()` Returns the flags used to describe the item.
`QFont` | `font(int column)` Returns the font used to render the text in the specified `column`.
`QBrush` | `foreground(int column)` Returns the brush used to render the foreground (e.g.
`static QTreeWidgetItem` | `fromNativePointer(QNativePointer nativePointer)` This method returns the QTreeWidgetItem instance pointed to by `nativePointer`.
`QIcon` | `icon(int column)` Returns the icon that is displayed in the specified `column`.
`int` | `indexOfChild(QTreeWidgetItem child)` Returns the index of the given `child` in the item's list of children.
`void` | `insertChild(int index, QTreeWidgetItem child)` Inserts the `child` item at `index` in the list of children.
`void` | `insertChildren(int index, java.util.List children)` Inserts the given list of `children` into the list of the item children at `index` .
`boolean` | `isDisabled()` Returns true if the item is disabled; otherwise returns false.
`boolean` | `isExpanded()` Returns true if the item is expanded, otherwise returns false.
`boolean` | `isFirstColumnSpanned()` Returns true if the item is spanning all the columns in a row; otherwise returns false.
`boolean` | `isHidden()` Returns true if the item is hidden, otherwise returns false.
`boolean` | `isSelected()` Returns true if the item is selected, otherwise returns false.
`boolean` | `operator_less(QTreeWidgetItem other)` Returns true if the text in the item is less than the text in the `other` item, otherwise returns false.
`QTreeWidgetItem` | `parent()` Returns the item's parent.
`void` | `read(QDataStream in)` Reads the item from stream `in`.
`void` | `readFrom(QDataStream in)` Reads a QTreeWidgetItem
`void` | `removeChild(QTreeWidgetItem child)` Removes the given item indicated by `child`.
`void` | `setBackground(int column, QBrush brush)` Sets the background brush of the label in the given `column` to the specified `brush`.
`void` | `setCheckState(int column, Qt.CheckState state)` Sets the item in the given `column` check state to be `state`.
`void` | `setChildIndicatorPolicy(QTreeWidgetItem.ChildIndicatorPolicy policy)` Sets the item indicator `policy`.
`void` | `setData(int column, int role, java.lang.Object value)` Sets the value for the item's `column` and `role` to the given `value`.
`void` | `setDisabled(boolean disabled)` Disables the item if `disabled` is true; otherwise enables the item.
`void` | `setExpanded(boolean expand)` Expands the item if `expand` is true, otherwise collapses the item.
`void` | `setFirstColumnSpanned(boolean span)` Sets the first section to span all columns if `span` is true; otherwise all item sections are shown.
`void` | `setFlags(Qt.ItemFlag[] flags)` Sets the flags for the item to the given `flags`.
`void` | `setFlags(Qt.ItemFlags flags)` Sets the flags for the item to the given `flags`.
`void` | `setFont(int column, QFont font)` Sets the font used to display the text in the given `column` to the given `font`.
`void` | `setForeground(int column, QBrush brush)` Sets the foreground brush of the label in the given `column` to the specified `brush`.
`void` | `setHidden(boolean hide)` Hides the item if `hide` is true, otherwise shows the item.
`void` | `setIcon(int column, QIcon icon)` Sets the icon to be displayed in the given `column` to `icon`.
`void` | `setSelected(boolean select)` Sets the selected state of the item to `select`.
`void` | `setSizeHint(int column, QSize size)` Sets the size hint for the tree item in the given `column` to be `size`.
`void` | `setStatusTip(int column, java.lang.String statusTip)` Sets the status tip for the given `column` to the given `statusTip`.
`void` | `setText(int column, java.lang.String text)` Sets the text to be displayed in the given `column` to the given `text`.
`void` | `setTextAlignment(int column, int alignment)` Sets the text alignment for the label in the given `column` to the `alignment` specified (see `Qt::AlignmentFlag` ).
`void` | `setToolTip(int column, java.lang.String toolTip)` Sets the tooltip for the given `column` to `toolTip`.
`void` | `setWhatsThis(int column, java.lang.String whatsThis)` Sets the "What's This?" help for the given `column` to `whatsThis`.
`QSize` | `sizeHint(int column)` Returns the size hint set for the tree item in the given `column` (see `QSize`).
`void` | `sortChildren(int column, Qt.SortOrder order)` Sorts the children of the item using the given `order`, by the values in the given `column`.
`java.lang.String` | `statusTip(int column)` Returns the status tip for the contents of the given `column`.
`QTreeWidgetItem` | `takeChild(int index)` Removes the item at `index` and returns it, otherwise return 0.
`java.util.List` | `takeChildren()` Removes the list of children and returns it, otherwise returns an empty list.
`java.lang.String` | `text(int column)` Returns the text in the specified `column`.
`int` | `textAlignment(int column)` Returns the text alignment for the label in the given `column` (see `Qt::AlignmentFlag` ).
`java.lang.String` | `toolTip(int column)` Returns the tool tip for the given `column`.
`QTreeWidget` | `treeWidget()` Returns the tree widget that contains the item.
`int` | `type()` Returns the type passed to the `QTreeWidgetItem` constructor.
`java.lang.String` | `whatsThis(int column)` Returns the "What's This?" help for the contents of the given `column`.
`void` | `write(QDataStream out)` Writes the item to stream `out`.
`void` | `writeTo(QDataStream out)` Writes thisQTreeWidgetItem

Methods inherited from class com.trolltech.qt.QtJambiObject
`dispose, disposed, equals, finalize, reassignNativeResources, tr, tr, tr`

Methods inherited from class com.trolltech.qt.QSignalEmitter
`blockSignals, disconnect, disconnect, signalsBlocked, signalSender, thread`

Methods inherited from class java.lang.Object
`getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Methods inherited from interface com.trolltech.qt.QtJambiInterface
`disableGarbageCollection, nativeId, nativePointer, reenableGarbageCollection, setJavaOwnership`

Constructor Detail

### QTreeWidgetItem

    public QTreeWidgetItem(QTreeWidget view,
                           QTreeWidgetItem after)

### QTreeWidgetItem

    public QTreeWidgetItem(QTreeWidget view,
                           QTreeWidgetItem after,
                           int type)

### QTreeWidgetItem

    public QTreeWidgetItem(QTreeWidget view,
                           java.util.List strings)

### QTreeWidgetItem

    public QTreeWidgetItem(QTreeWidget view,
                           java.util.List strings,
                           int type)

### QTreeWidgetItem

    public QTreeWidgetItem(QTreeWidget view)

  Constructs a tree widget item of the specified `type` and appends it to the items in the given `parent`.

See also:
  `type()`.

### QTreeWidgetItem

    public QTreeWidgetItem(QTreeWidget view,
                           int type)

### QTreeWidgetItem

    public QTreeWidgetItem(QTreeWidgetItem parent,
                           QTreeWidgetItem after)

  Constructs a tree widget item of the specified `type` and inserts it into the given `parent` after the `preceding` item.

See also:
  `type()`.

### QTreeWidgetItem

    public QTreeWidgetItem(QTreeWidgetItem parent,
                           QTreeWidgetItem after,
                           int type)

  Constructs a tree widget item of the specified `type` and inserts it into the given `parent` after the `preceding` item.

See also:
  `type()`.

### QTreeWidgetItem

    public QTreeWidgetItem(QTreeWidgetItem parent,
                           java.util.List strings)

  Constructs a tree widget item of the specified `type` and appends it to the items in the given `parent`. The given list of `strings` will be set as the item text for each column in the item.

See also:
  `type()`.

### QTreeWidgetItem

    public QTreeWidgetItem(QTreeWidgetItem parent,
                           java.util.List strings,
                           int type)

  Constructs a tree widget item of the specified `type` and appends it to the items in the given `parent`. The given list of `strings` will be set as the item text for each column in the item.

See also:
  `type()`.

### QTreeWidgetItem

    public QTreeWidgetItem(QTreeWidgetItem parent)

  Constructs a tree widget item and append it to the given `parent`.

See also:
  `type()`.

### QTreeWidgetItem

    public QTreeWidgetItem(QTreeWidgetItem parent,
                           int type)

  Constructs a tree widget item of the specified `type` and appends it to the items in the given `parent`.

See also:
  `type()`.

### QTreeWidgetItem

    public QTreeWidgetItem(java.util.List strings)

  Constructs a tree widget item of the specified `type`. The item must be inserted into a tree widget. The given list of `strings` will be set as the item text for each column in the item.

See also:
  `type()`.

### QTreeWidgetItem

    public QTreeWidgetItem(java.util.List strings,
                           int type)

  Constructs a tree widget item of the specified `type`. The item must be inserted into a tree widget. The given list of `strings` will be set as the item text for each column in the item.

See also:
  `type()`.

### QTreeWidgetItem

    public QTreeWidgetItem()

  Constructs a tree widget item of the specified `type`. The item must be inserted into a tree widget.

See also:
  `type()`.

### QTreeWidgetItem

    public QTreeWidgetItem(int type)

  Constructs a tree widget item of the specified `type`. The item must be inserted into a tree widget.

See also:
  `type()`.

Method Detail

### addChild

    public final void addChild(QTreeWidgetItem child)

  Appends the `child` item to the list of children.

See also:
  `insertChild()`, and `takeChild()`.

### addChildren

    public final void addChildren(java.util.List children)

  Appends the given list of `children` to the item.

See also:
  `insertChildren()`, and `takeChildren()`.

### background

    public final QBrush background(int column)

  Returns the brush used to render the background of the specified `column`.

See also:
  `setBackground()`, and `foreground()`.

### checkState

    public final Qt.CheckState checkState(int column)

  Returns the check state of the label in the given `column`.

See also:
  `setCheckState()`, and `Qt::CheckState` .

### child

    public final QTreeWidgetItem child(int index)

  Returns the item at the given `index` in the list of the item's children.

See also:
  `parent()`.

### childCount

    public final int childCount()

  Returns the number of child items.

### childIndicatorPolicy

    public final QTreeWidgetItem.ChildIndicatorPolicy childIndicatorPolicy()

  Returns the item indicator policy. This policy decides when the tree branch expand/collapse indicator is shown.

See also:
  `setChildIndicatorPolicy()`.

### columnCount

    public final int columnCount()

  Returns the number of columns in the item.

### flags

    public final Qt.ItemFlags flags()

  Returns the flags used to describe the item. These determine whether the item can be checked, edited, and selected.

  The default value for flags is `Qt::ItemIsSelectable` | `Qt::ItemIsUserCheckable` | `Qt::ItemIsEnabled` | `Qt::ItemIsDragEnabled` . If the item was constructed with a parent, flags will in addition contain `Qt::ItemIsDropEnabled` .

See also:
  `setFlags()`.

### font

    public final QFont font(int column)

  Returns the font used to render the text in the specified `column`.

See also:
  `setFont()`.

### foreground

    public final QBrush foreground(int column)

  Returns the brush used to render the foreground (e.g. text) of the specified `column`.

See also:
  `setForeground()`, and `background()`.

### icon

    public final QIcon icon(int column)

  Returns the icon that is displayed in the specified `column`.

See also:
  `setIcon()`, and `iconSize`.

### indexOfChild

    public final int indexOfChild(QTreeWidgetItem child)

  Returns the index of the given `child` in the item's list of children.

### insertChild

    public final void insertChild(int index,
                                  QTreeWidgetItem child)

  Inserts the `child` item at `index` in the list of children.

  If the child has already been inserted somewhere else it wont be inserted again.

### insertChildren

    public final void insertChildren(int index,
                                     java.util.List children)

  Inserts the given list of `children` into the list of the item children at `index` .

  Children that have already been inserted somewhere else wont be inserted.

### isDisabled

    public final boolean isDisabled()

  Returns true if the item is disabled; otherwise returns false.

See also:
  `setFlags()`.

### isExpanded

    public final boolean isExpanded()

  Returns true if the item is expanded, otherwise returns false.

See also:
  `setExpanded()`.

### isFirstColumnSpanned

    public final boolean isFirstColumnSpanned()

  Returns true if the item is spanning all the columns in a row; otherwise returns false.

See also:
  `setFirstColumnSpanned()`.

### isHidden

    public final boolean isHidden()

  Returns true if the item is hidden, otherwise returns false.

See also:
  `setHidden()`.

### isSelected

    public final boolean isSelected()

  Returns true if the item is selected, otherwise returns false.

See also:
  `setSelected()`.

### writeTo

    public final void writeTo(QDataStream out)

  Writes thisQTreeWidgetItem

### readFrom

    public final void readFrom(QDataStream in)

  Reads a QTreeWidgetItem

### parent

    public final QTreeWidgetItem parent()

  Returns the item's parent.

See also:
  `child()`.

### removeChild

    public final void removeChild(QTreeWidgetItem child)

  Removes the given item indicated by `child`. The removed item will not be deleted.

### setBackground

    public final void setBackground(int column,
                                    QBrush brush)

  Sets the background brush of the label in the given `column` to the specified `brush`.

See also:
  `background()`, and `setForeground()`.

### setCheckState

    public final void setCheckState(int column,
                                    Qt.CheckState state)

  Sets the item in the given `column` check state to be `state`.

See also:
  `checkState()`.

### setChildIndicatorPolicy

    public final void setChildIndicatorPolicy(QTreeWidgetItem.ChildIndicatorPolicy policy)

  Sets the item indicator `policy`. This policy decides when the tree branch expand/collapse indicator is shown. The default value is `ShowForChildren`.

See also:
  `childIndicatorPolicy()`.

### setDisabled

    public final void setDisabled(boolean disabled)

  Disables the item if `disabled` is true; otherwise enables the item.

See also:
  `isDisabled()`, and `setFlags()`.

### setExpanded

    public final void setExpanded(boolean expand)

  Expands the item if `expand` is true, otherwise collapses the item.

  Warning: The `QTreeWidgetItem` must be added to the `QTreeWidget` before calling this function.

See also:
  `isExpanded()`.

### setFirstColumnSpanned

    public final void setFirstColumnSpanned(boolean span)

  Sets the first section to span all columns if `span` is true; otherwise all item sections are shown.

See also:
  `isFirstColumnSpanned()`.

### setFlags

    public final void setFlags(Qt.ItemFlag[] flags)

  Sets the flags for the item to the given `flags`. These determine whether the item can be selected or modified. This is often used to disable an item.

See also:
  `flags()`.

### setFlags

    public final void setFlags(Qt.ItemFlags flags)

  Sets the flags for the item to the given `flags`. These determine whether the item can be selected or modified. This is often used to disable an item.

See also:
  `flags()`.

### setFont

    public final void setFont(int column,
                              QFont font)

  Sets the font used to display the text in the given `column` to the given `font`.

See also:
  `font()`, `setText()`, and `setForeground()`.

### setForeground

    public final void setForeground(int column,
                                    QBrush brush)

  Sets the foreground brush of the label in the given `column` to the specified `brush`.

See also:
  `foreground()`, and `setBackground()`.

### setHidden

    public final void setHidden(boolean hide)

  Hides the item if `hide` is true, otherwise shows the item.

See also:
  `isHidden()`.

### setIcon

    public final void setIcon(int column,
                              QIcon icon)

  Sets the icon to be displayed in the given `column` to `icon`.

See also:
  `icon()`, `setText()`, and `iconSize`.

### setSelected

    public final void setSelected(boolean select)

  Sets the selected state of the item to `select`.

See also:
  `isSelected()`.

### setSizeHint

    public final void setSizeHint(int column,
                                  QSize size)

  Sets the size hint for the tree item in the given `column` to be `size`. If no size hint is set, the item delegate will compute the size hint based on the item data.

See also:
  `sizeHint()`.

### setStatusTip

    public final void setStatusTip(int column,
                                   java.lang.String statusTip)

  Sets the status tip for the given `column` to the given `statusTip`. `QTreeWidget` mouse tracking needs to be enabled for this feature to work.

See also:
  `statusTip()`, `setToolTip()`, and `setWhatsThis()`.

### setText

    public final void setText(int column,
                              java.lang.String text)

  Sets the text to be displayed in the given `column` to the given `text`.

See also:
  `text()`, `setFont()`, and `setForeground()`.

### setTextAlignment

    public final void setTextAlignment(int column,
                                       int alignment)

  Sets the text alignment for the label in the given `column` to the `alignment` specified (see `Qt::AlignmentFlag` ).

See also:
  `textAlignment()`.

### setToolTip

    public final void setToolTip(int column,
                                 java.lang.String toolTip)

  Sets the tooltip for the given `column` to `toolTip`.

See also:
  `toolTip()`, `setStatusTip()`, and `setWhatsThis()`.

### setWhatsThis

    public final void setWhatsThis(int column,
                                   java.lang.String whatsThis)

  Sets the "What's This?" help for the given `column` to `whatsThis`.

See also:
  `whatsThis()`, `setStatusTip()`, and `setToolTip()`.

### sizeHint

    public final QSize sizeHint(int column)

  Returns the size hint set for the tree item in the given `column` (see `QSize`).

See also:
  `setSizeHint()`.

### sortChildren

    public final void sortChildren(int column,
                                   Qt.SortOrder order)

  Sorts the children of the item using the given `order`, by the values in the given `column`.

  Note: This function does nothing if the item is not associated with a `QTreeWidget`.

### statusTip

    public final java.lang.String statusTip(int column)

  Returns the status tip for the contents of the given `column`.

See also:
  `setStatusTip()`.

### takeChild

    public final QTreeWidgetItem takeChild(int index)

  Removes the item at `index` and returns it, otherwise return 0.

### takeChildren

    public final java.util.List takeChildren()

  Removes the list of children and returns it, otherwise returns an empty list.

### text

    public final java.lang.String text(int column)

  Returns the text in the specified `column`.

See also:
  `setText()`.

### textAlignment

    public final int textAlignment(int column)

  Returns the text alignment for the label in the given `column` (see `Qt::AlignmentFlag` ).

See also:
  `setTextAlignment()`.

### toolTip

    public final java.lang.String toolTip(int column)

  Returns the tool tip for the given `column`.

See also:
  `setToolTip()`.

### treeWidget

    public final QTreeWidget treeWidget()

  Returns the tree widget that contains the item.

### type

    public final int type()

  Returns the type passed to the `QTreeWidgetItem` constructor.

### whatsThis

    public final java.lang.String whatsThis(int column)

  Returns the "What's This?" help for the contents of the given `column`.

See also:
  `setWhatsThis()`.

### clone

    public QTreeWidgetItem clone()

  This method is reimplemented for internal reasons

  Overrides:
    `clone` in class `java.lang.Object`

### data

    public java.lang.Object data(int column,
                                 int role)

  Returns the value for the item's `column` and `role`.

See also:
  `setData()`.

### operator_less

    public boolean operator_less(QTreeWidgetItem other)

  Returns true if the text in the item is less than the text in the `other` item, otherwise returns false.

### read

    public void read(QDataStream in)

  Reads the item from stream `in`. This only reads data into a single item.

See also:
  `write()`.

### setData

    public void setData(int column,
                        int role,
                        java.lang.Object value)

  Sets the value for the item's `column` and `role` to the given `value`.

  The `role` describes the type of data specified by `value`, and is defined by the `Qt::ItemDataRole` enum.

See also:
  `data()`.

### write

    public void write(QDataStream out)

  Writes the item to stream `out`. This only writes data from one single item.

See also:
  `read()`.

### fromNativePointer

    public static QTreeWidgetItem fromNativePointer(QNativePointer nativePointer)

  This method returns the QTreeWidgetItem instance pointed to by `nativePointer`.

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