#coding=utf-8
__author__ = 'Administrator'
__doc__ = '''
pythonwin中win32gui的用法
本文件演如何使用win32gui來遍歷系統(tǒng)中所有的頂層窗口，
并遍歷所有頂層窗口中的子窗口
'''
import win32gui
from pprint import pprint
def gbk2utf8(s):
    return s.decode('gbk').encode('utf-8')
def show_window_attr(hWnd):
    '''
    顯示窗口的屬性
    :return:
    '''
    if not hWnd:
        return
    #中文系統(tǒng)默認(rèn)title是gb2312的編碼
    title = win32gui.GetWindowText(hWnd)
    title = gbk2utf8(title)
    clsname = win32gui.GetClassName(hWnd)
    print '窗口句柄:%s ' % (hWnd)
    print '窗口標(biāo)題:%s' % (title)
    print '窗口類名:%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頂級窗口
    :return:
    '''
    hWndList = []
    win32gui.EnumWindows(lambda hWnd, param: param.append(hWnd), hWndList)
    show_windows(hWndList)
    return hWndList
def 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 hWndChildList
hWndList = demo_top_windows()
assert len(hWndList)
parent = hWndList[20]
#這里系統(tǒng)的窗口好像不能直接遍歷，不知道是否是權(quán)限的問題
hWndChildList = demo_child_windows(parent)
print('-----top windows-----')
pprint(hWndList)
print('-----sub windows:from %s------' % (parent))
pprint(hWndChildList)