def init_window(self, exe_path=r"C:\Program Files (x86)\Tencent\WeChat\WeChat.exe",
                    turn_page_interval=3,
                    click_url_interval=1,
                    win_width=1000,
                    win_height=600):
        app = Application(backend="uia").connect(path=exe_path)
        self.main_win = app.window(title=u"微信", class_name="WeChatMainWndForPC")
        self.main_win.set_focus()
        self.app = app
        self.visible_top = 70
        self.turn_page_interval = turn_page_interval
        self.click_url_interval = click_url_interval
        self.browser = None
        self.win_width = win_width
        self.win_height = win_height
        # 為了讓移動(dòng)窗口，同時(shí)使用非uia的backend，這是pywinauto的uia的一個(gè)bug
        self.app2 = Application().connect(path=exe_path)
        self.move_window()

    def crawl_gongzhonghao(self, account_name, articles, states, detail,
                           max_pages=6, latest_date=None, no_item_retry=3):
        logger.debug(account_name)
        if not self.locate_user(account_name):
            return False
        last_visited_titles = set()
        visited_urls = set()
        self.turn_page_up(min(20, max_pages * 2))

        pagedown_retry = 0
        last_visited_titles = []
        for page in range(0, max_pages):
            items = []
            last_visited_titles = self.process_page(account_name, items, last_visited_titles, states, visited_urls, detail)
            articles.extend(items)

            if len(items) == 0:
                pagedown_retry += 1
                if pagedown_retry >= no_item_retry:
                    s = "break because of retry {}".format(pagedown_retry)
                    logger.debug(s)
                    WechatAutomator.add_to_detail(s, detail)
                    break
            else:
                pagedown_retry = 0

            if len(items) > 0 and latest_date is not None:
                html = items[-1][-1]
                pub_date = WechatAutomator.get_pubdate(html)
                if pub_date and pub_date < latest_date:
                    s = "stop because {} < {}".format(pub_date, latest_date)
                    logger.debug(s)
                    WechatAutomator.add_to_detail(s, detail)
                    break

            url_exist = False
            for item in items:
                if WechatAutomator.url_in_states(item[0], states):
                    s = "stop because url exist {}".format(item[0])
                    logger.debug(s)
                    WechatAutomator.add_to_detail(s, detail)
                    url_exist = True
                    break
            if url_exist:
                break

            self.click_right()
            self.main_win.type_keys("{PGDN}")
            time.sleep(self.turn_page_interval)

        self.turn_page_up(page * 2)

        return True

    def locate_user(self, user, retry=5):
        if not self.main_win:
            raise RuntimeError("you should call init_window first")

        search_btn = self.main_win.child_window(title="搜索", control_type="Edit")
        self.click_center(search_btn)

        self.main_win.type_keys("^a")
        self.main_win.type_keys("{BACKSPACE}")
        self.main_win.type_keys(user)
        for i in range(retry):
            time.sleep(1)
            try:
                search_list = self.main_win.child_window(title="搜索結(jié)果")
                match_result = search_list.child_window(title=user, control_type="ListItem")
                self.click_center(match_result)
                return True
            except:
                pass

        return False

    # 計(jì)算可見的高度
    visible_height = min(rect.bottom, win_rect.bottom) - max(rect.top, win_rect.top+self.visible_top)
    # 太窄的不點(diǎn)擊，希望下次翻頁后能顯示更多像素從而可以點(diǎn)擊，
    # 但是如果微信的某個(gè)文章的框的高度小于10個(gè)像素，那么這篇文章就無法被點(diǎn)擊
    # 不過作者目前為發(fā)現(xiàn)這么窄的文章
    if visible_height < 10:
        continue
    
    # 如果某個(gè)文章的框太大，則拋出異常，目前為止為發(fā)現(xiàn)這樣的問題。
    if rect.bottom - rect.top >= win_rect.bottom - self.visible_top:
        raise RuntimeError("{}-{}>={}-{}".format(rect.bottom, rect.top,
                                                 win_rect.bottom, self.visible_top))
    # 如果下部部分可見，那么點(diǎn)擊上方是比較”安全“的
    if rect.bottom >= win_rect.bottom:
        click_up = True
    # 如果下部完全可見，則點(diǎn)擊下方是”安全“的
    else:
        click_up = False

    def process_page(self, account_name, items, lastpage_clicked_titles, states, visited_urls, detail):
        clicked_titles = set()
        text = self.main_win.child_window(title=account_name, control_type="Text", found_index=0)
        parent = text
        while parent:
            parent = parent.parent()
            if '會(huì)話列表' == parent.element_info.name:
                break
        paths = [0, 2, 0, 0, 0, 1, 0]
        for idx in paths:
            parent = parent.children()[idx]

        elems = []
        self.recursive_get(parent, elems)
        win_rect = self.main_win.rectangle()
        for elem in elems:
            rect = elem.rectangle()

            if elem.element_info.name in lastpage_clicked_titles:
                continue

            if rect.top >= win_rect.bottom or rect.bottom <= self.visible_top:
                continue

            visible_height = min(rect.bottom, win_rect.bottom) - max(rect.top, win_rect.top+self.visible_top)
            if visible_height < 10:
                continue

            if rect.bottom - rect.top >= win_rect.bottom - self.visible_top:
                raise RuntimeError("{}-{}>={}-{}".format(rect.bottom, rect.top,
                                                         win_rect.bottom, self.visible_top))
            if rect.bottom >= win_rect.bottom:
                click_up = True
            else:
                click_up = False
            if self.is_bad_elem(elem):
                s = "not good elem {}".format(elem.element_info.name[0:10])
                logger.debug(s)
                WechatAutomator.add_to_detail(s, detail)
                continue

            try:
                self.click_url(rect, win_rect, click_up)
                copy_btn = self.browser.child_window(title="復(fù)制鏈接地址")
                self.click_center(copy_btn, click_main=False)
                url = clipboard.GetData()
                if elem.element_info.name != '圖片':
                    clicked_titles.add(elem.element_info.name)
                if url and not url in visited_urls:
                    visited_urls.add(url)
                    html = None
                    try:
                        html = requests.get(url).text
                    except:
                        s = "fail get {}".format(url)
                        logger.debug(s)
                        WechatAutomator.add_to_detail(s, detail)

                    items.append((url, rect, elem.element_info.name, html))

            except:
                traceback.print_exc()
                pass
            finally:
                if self.browser:
                    try:
                        self.browser.close()
                    except:
                        pass
                    self.browser = None

            time.sleep(self.click_url_interval)

        return clicked_titles