#coding=utf-8
from ctypes import *
from ctypes.wintypes import BOOL, HWND, LPARAM, HKL
import _winreg

hwnd = windll.user32.FindWindowA('Notepad',None)
print "hwnd:", hwnd

windll.user32.SetForegroundWindow(hwnd)

editHwnd = 0

@WINFUNCTYPE(BOOL, HWND, LPARAM)
def print_title(hwnd,lParam):
    className = (c_wchar * 7)()
    windll.user32.GetClassNameW(hwnd,className,7)
    className = className.value
    if className!="":
        print className,hwnd
        global editHwnd
        if className=='Edit':
            editHwnd = hwnd
    return 1
     
windll.user32.EnumChildWindows(hwnd,print_title,1)

print "editHwnd:",editHwnd

kListCount = windll.user32.GetKeyboardLayoutList(0,None)
print "GetKeyboardLayoutList:",kListCount

#kList= windll.Kernel32.HeapAlloc(windll.Kernel32.GetProcessHeap(),0x00000008,kListCount*sizeof(HKL))
kList=(HKL * kListCount)()
windll.user32.GetKeyboardLayoutList(kListCount,kList)
#kList = (HKL * kListCount).from_address(kList)
for k in kList:
    print "KeyboardLayout:",k,k&0x0000ffff,k>>16,hex(k)
    try:
        key = _winreg.OpenKey(_winreg.HKEY_LOCAL_MACHINE,'SYSTEM\CurrentControlSet\Control\Keyboard Layouts\%X'%k)
        print _winreg.QueryValueEx(key,'Layout Text')[0]
    except:
        print "No Find Layout Text of %s"%k
hkl=kList[0]
#windll.Kernel32.HeapFree(windll.Kernel32.GetProcessHeap(),0,kList)

p= c_int()
windll.user32.GetWindowThreadProcessId(hwnd,byref(p))
pid = p.value
print "GetWindowThreadProcessId:",pid

tid = windll.Kernel32.GetCurrentThreadId()
print "GetCurrentThreadId:",tid

windll.user32.AttachThreadInput(tid,pid,True)

print "editHwnd:",editHwnd
print "hkl:",hkl
#print "WM_INPUTLANGCHANGEREQUEST:", windll.user32.SendMessageA(editHwnd,0x0050,True,hkl)
print "WM_INPUTLANGCHANGEREQUEST:", windll.user32.SendMessageA(hwnd,0x0050,True,hkl)

windll.user32.AttachThreadInput(tid,pid,False)

print "GetLastError:", GetLastError()