python模拟键盘输入 切换键盘布局过程解析

def keyHwnd(hwndEx, char):  """  向指定控件输入值  :param hwndEx: 控件句柄  :param char: 字符串  :return: True or Flase  """  try:    for _ in char:      print('key:%s  ascii:%d' % (_, ord(_)))      win32api.PostMessage(hwndEx, win32con.WM_CHAR, ord(_), 0)      time.sleep(random.uniform(0,0.2))  except Exception as e:    print(e)    return False  return True  hwnd = win32gui.FindWindow(None,'a.txt - 记事本')print(hwnd)win32gui.SetForegroundWindow(hwnd)hwndex = win32gui.FindWindowEx(hwnd,None,'Edit', None)keyHwnd(hwndex,'撒地方SDFkof;ldsojfdfdsjfd;slkjfdlksjfkldsjflkdsjlkfjkldsljkfjdssj')

import win32confrom win32con import WM_INPUTLANGCHANGEREQUESTimport win32guiimport win32apidef setKeyboardLayout_en(inner):  def wrapper(*args, **kwargs):    if win32api.LoadKeyboardLayout('0x0409', win32con.KLF_ACTIVATE) == None:      return Exception('加载键盘失败')    # 语言代码    # https://msdn.microsoft.com/en-us/library/cc233982.aspx    LID = {0x0804: "Chinese (Simplified) (People's Republic of China)",        0x0409: 'English (United States)'}    # 获取前景窗口句柄    hwnd = win32gui.GetForegroundWindow()    # 获取前景窗口标题    title = win32gui.GetWindowText(hwnd)    # 获取键盘布局列表    im_list = win32api.GetKeyboardLayoutList()    im_list = list(map(hex, im_list))    print(im_list)    oldKey = hex(win32api.GetKeyboardLayout())    # 设置键盘布局为英文    result = win32api.SendMessage(      hwnd,      WM_INPUTLANGCHANGEREQUEST,      0,      0x4090409)    if result == 0:      print('设置英文键盘成功！')    inner(*args,*kwargs)    result = win32api.SendMessage(      hwnd,      WM_INPUTLANGCHANGEREQUEST,      0,      oldKey)    if result == 0:      print('还原键盘成功！')  return wrapper

win32api.keybd_event(65, 0, 0, 0)time.sleep(random.uniform(0, 0.5))win32api.keybd_event(65, 0, win32con.KEYEVENTF_KEYUP, 0)