pythonwin-win32gui 窗口查找和遍历

#coding=utf-8__author__ = 'Administrator'__doc__ = '''pythonwin中win32gui的用法本文件演如何使用win32gui来遍历系统中所有的顶层窗口，并遍历所有顶层窗口中的子窗口'''import win32guifrom pprint import pprintdef gbk2utf8(s):    return s.decode('gbk').encode('utf-8')def show_window_attr(hWnd):    '''    显示窗口的属性    :return:    '''    if not hWnd:        return    #中文系统默认title是gb2312的编码    title = win32gui.GetWindowText(hWnd)    title = gbk2utf8(title)    clsname = win32gui.GetClassName(hWnd)    print '窗口句柄:%s ' % (hWnd)    print '窗口标题:%s' % (title)    print '窗口类名:%s' % (clsname)    print ''def show_windows(hWndList):    for h in hWndList:        show_window_attr(h)def demo_top_windows():    '''    演示如何列出所有的顶级窗口    :return:    '''    hWndList = []    win32gui.EnumWindows(lambda hWnd, param: param.append(hWnd), hWndList)    show_windows(hWndList)    return hWndListdef demo_child_windows(parent):    '''    演示如何列出所有的子窗口    :return:    '''    if not parent:        return    hWndChildList = []    win32gui.EnumChildWindows(parent, lambda hWnd, param: param.append(hWnd),  hWndChildList)    show_windows(hWndChildList)    return hWndChildListhWndList = demo_top_windows()assert len(hWndList)parent = hWndList[20]#这里系统的窗口好像不能直接遍历，不知道是否是权限的问题hWndChildList = demo_child_windows(parent)print('-----top windows-----')pprint(hWndList)print('-----sub windows:from %s------' % (parent))pprint(hWndChildList)