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 win32gui
from pprint import pprint
 
def 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 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]
#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)