Display a message with choices of OK and Cancel.

    returned value:
        OK       -> True
        Cancel   -> False

    :ref:`screenshots<ask_ok_cancel>`

    :param message: message to be displayed.
    :param title: window title
    :param default: default button as boolean (OK=True, Cancel=False)
    :rtype: bool

def ask_ok_cancel(message='', default=0, title=''):
    """
    Display a message with choices of OK and Cancel.

    returned value:
        OK       -> True
        Cancel   -> False

    :ref:`screenshots<ask_ok_cancel>`

    :param message: message to be displayed.
    :param title: window title
    :param default: default button as boolean (OK=True, Cancel=False)
    :rtype: bool
    """
    return backend_api.opendialog("ask_ok_cancel", dict(message=message, default=default, title=title))