How to use the qtconsole.qt.QtCore.Qt function in qtconsole

# control handles
    _control = None
    _page_control = None
    _splitter = None

    # When the control key is down, these keys are mapped.
    _ctrl_down_remap = { QtCore.Qt.Key_B : QtCore.Qt.Key_Left,
                         QtCore.Qt.Key_F : QtCore.Qt.Key_Right,
                         QtCore.Qt.Key_A : QtCore.Qt.Key_Home,
                         QtCore.Qt.Key_P : QtCore.Qt.Key_Up,
                         QtCore.Qt.Key_N : QtCore.Qt.Key_Down,
                         QtCore.Qt.Key_H : QtCore.Qt.Key_Backspace, }
    if not sys.platform == 'darwin':
        # On OS X, Ctrl-E already does the right thing, whereas End moves the
        # cursor to the bottom of the buffer.
        _ctrl_down_remap[QtCore.Qt.Key_E] = QtCore.Qt.Key_End

    # The shortcuts defined by this widget. We need to keep track of these to
    # support 'override_shortcuts' above.
    _shortcuts = set(_ctrl_down_remap.keys()) | \
                     { QtCore.Qt.Key_C, QtCore.Qt.Key_G, QtCore.Qt.Key_O,
                       QtCore.Qt.Key_V }

    _temp_buffer_filled = False

    #---------------------------------------------------------------------------
    # 'QObject' interface
    #---------------------------------------------------------------------------

    def __init__(self, parent=None, **kw):
        """ Create a ConsoleWidget.

self._request_info = {}
        self._request_info['execute'] = {}
        self._callback_dict = {}
        self._display_banner = True

        # Configure the ConsoleWidget.
        self.tab_width = 4
        self._set_continuation_prompt('... ')

        # Configure the CallTipWidget.
        self._call_tip_widget.setFont(self.font)
        self.font_changed.connect(self._call_tip_widget.setFont)

        # Configure actions.
        action = self._copy_raw_action
        key = QtCore.Qt.CTRL | QtCore.Qt.SHIFT | QtCore.Qt.Key_C
        action.setEnabled(False)
        action.setShortcut(QtGui.QKeySequence(key))
        action.setShortcutContext(QtCore.Qt.WidgetWithChildrenShortcut)
        action.triggered.connect(self.copy_raw)
        self.copy_available.connect(action.setEnabled)
        self.addAction(action)

        # Connect signal handlers.
        document = self._control.document()
        document.contentsChange.connect(self._document_contents_change)

        # Set flag for whether we are connected via localhost.
        self._local_kernel = local_kernel

        # Whether or not a clear_output call is pending new output.
        self._pending_clearoutput = False

# When the control key is down, these keys are mapped.
    _ctrl_down_remap = { QtCore.Qt.Key_B : QtCore.Qt.Key_Left,
                         QtCore.Qt.Key_F : QtCore.Qt.Key_Right,
                         QtCore.Qt.Key_A : QtCore.Qt.Key_Home,
                         QtCore.Qt.Key_P : QtCore.Qt.Key_Up,
                         QtCore.Qt.Key_N : QtCore.Qt.Key_Down,
                         QtCore.Qt.Key_H : QtCore.Qt.Key_Backspace, }
    if not sys.platform == 'darwin':
        # On OS X, Ctrl-E already does the right thing, whereas End moves the
        # cursor to the bottom of the buffer.
        _ctrl_down_remap[QtCore.Qt.Key_E] = QtCore.Qt.Key_End

    # The shortcuts defined by this widget. We need to keep track of these to
    # support 'override_shortcuts' above.
    _shortcuts = set(_ctrl_down_remap.keys()) | \
                     { QtCore.Qt.Key_C, QtCore.Qt.Key_G, QtCore.Qt.Key_O,
                       QtCore.Qt.Key_V }

    _temp_buffer_filled = False

    #---------------------------------------------------------------------------
    # 'QObject' interface
    #---------------------------------------------------------------------------

    def __init__(self, parent=None, **kw):
        """ Create a ConsoleWidget.

        Parameters
        ----------
        parent : QWidget, optional [default None]
            The parent for this widget.
        """

# Signal emitted when the font is changed.
    font_changed = QtCore.Signal(QtGui.QFont)

    #------ Protected class variables ------------------------------------------

    # control handles
    _control = None
    _page_control = None
    _splitter = None

    # When the control key is down, these keys are mapped.
    _ctrl_down_remap = { QtCore.Qt.Key_B : QtCore.Qt.Key_Left,
                         QtCore.Qt.Key_F : QtCore.Qt.Key_Right,
                         QtCore.Qt.Key_A : QtCore.Qt.Key_Home,
                         QtCore.Qt.Key_P : QtCore.Qt.Key_Up,
                         QtCore.Qt.Key_N : QtCore.Qt.Key_Down,
                         QtCore.Qt.Key_H : QtCore.Qt.Key_Backspace, }
    if not sys.platform == 'darwin':
        # On OS X, Ctrl-E already does the right thing, whereas End moves the
        # cursor to the bottom of the buffer.
        _ctrl_down_remap[QtCore.Qt.Key_E] = QtCore.Qt.Key_End

    # The shortcuts defined by this widget. We need to keep track of these to
    # support 'override_shortcuts' above.
    _shortcuts = set(_ctrl_down_remap.keys()) | \
                     { QtCore.Qt.Key_C, QtCore.Qt.Key_G, QtCore.Qt.Key_O,
                       QtCore.Qt.Key_V }

    _temp_buffer_filled = False

    #---------------------------------------------------------------------------
    # 'QObject' interface

self._custom_context_menu_requested)
        control.copyAvailable.connect(self.copy_available)
        control.redoAvailable.connect(self.redo_available)
        control.undoAvailable.connect(self.undo_available)

        # Hijack the document size change signal to prevent Qt from adjusting
        # the viewport's scrollbar. We are relying on an implementation detail
        # of Q(Plain)TextEdit here, which is potentially dangerous, but without
        # this functionality we cannot create a nice terminal interface.
        layout = control.document().documentLayout()
        layout.documentSizeChanged.disconnect()
        layout.documentSizeChanged.connect(self._adjust_scrollbars)

        # Configure the control.
        control.setAttribute(QtCore.Qt.WA_InputMethodEnabled, True)
        control.setContextMenuPolicy(QtCore.Qt.CustomContextMenu)
        control.setReadOnly(True)
        control.setUndoRedoEnabled(False)
        control.setVerticalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOn)
        return control

QtCore.Qt.Key_PageDown,
                                        QtCore.Qt.NoModifier)
            QtGui.qApp.sendEvent(self._page_control, new_event)
            return True

        elif key == QtCore.Qt.Key_Backspace:
            new_event = QtGui.QKeyEvent(QtCore.QEvent.KeyPress,
                                        QtCore.Qt.Key_PageUp,
                                        QtCore.Qt.NoModifier)
            QtGui.qApp.sendEvent(self._page_control, new_event)
            return True

        # vi/less -like key bindings
        elif key == QtCore.Qt.Key_J:
            new_event = QtGui.QKeyEvent(QtCore.QEvent.KeyPress,
                                        QtCore.Qt.Key_Down,
                                        QtCore.Qt.NoModifier)
            QtGui.qApp.sendEvent(self._page_control, new_event)
            return True

        # vi/less -like key bindings
        elif key == QtCore.Qt.Key_K:
            new_event = QtGui.QKeyEvent(QtCore.QEvent.KeyPress,
                                        QtCore.Qt.Key_Up,
                                        QtCore.Qt.NoModifier)
            QtGui.qApp.sendEvent(self._page_control, new_event)
            return True

        return False

def _set_paging(self, paging):
        """
        Change the pager to `paging` style.

        Parameters
        ----------
        paging : string
            Either "hsplit", "vsplit", or "inside"
        """
        if self._splitter is None:
            raise NotImplementedError("""can only switch if --paging=hsplit or
                    --paging=vsplit is used.""")
        if paging == 'hsplit':
            self._splitter.setOrientation(QtCore.Qt.Horizontal)
        elif paging == 'vsplit':
            self._splitter.setOrientation(QtCore.Qt.Vertical)
        elif paging == 'inside':
            raise NotImplementedError("""switching to 'inside' paging not
                    supported yet.""")
        else:
            raise ValueError("unknown paging method '%s'" % paging)
        self.paging = paging

if metadata:
            width = metadata.get('width', None)
            height = metadata.get('height', None)
        else:
            width = height = None
        try:
            image = QtGui.QImage()
            image.loadFromData(img, fmt.upper())
            if width and height:
                image = image.scaled(width, height,
                                     QtCore.Qt.IgnoreAspectRatio,
                                     QtCore.Qt.SmoothTransformation)
            elif width and not height:
                image = image.scaledToWidth(width, QtCore.Qt.SmoothTransformation)
            elif height and not width:
                image = image.scaledToHeight(height, QtCore.Qt.SmoothTransformation)
        except ValueError:
            self._insert_plain_text(cursor, 'Received invalid %s data.'%fmt)
        else:
            format = self._add_image(image)
            cursor.insertBlock()
            cursor.insertImage(format)
            cursor.insertBlock()