ctypes 获取窗口句柄hwnd

参考链接：https://stackoverflow.com/questions/37501191/how-to-get-windows-window-names-with-ctypes-in-python

import ctypes
from ctypes import wintypes
from collections import namedtuple

def list_windows():
    user32 = ctypes.WinDLL('user32', use_last_error=True)

    def check_zero(result, func, args):
        if not result:
            err = ctypes.get_last_error()
            if err:
                raise ctypes.WinError(err)
        return args

    if not hasattr(wintypes, 'LPDWORD'):  # PY2
        wintypes.LPDWORD = ctypes.POINTER(wintypes.DWORD)

    WindowInfo = namedtuple('WindowInfo', 'hwnd pid title')

    WNDENUMPROC = ctypes.WINFUNCTYPE(
        wintypes.BOOL,
        wintypes.HWND,  # _In_ hWnd
        wintypes.LPARAM, )  # _In_ lParam

    user32.EnumWindows.errcheck = check_zero
    user32.EnumWindows.argtypes = (
        WNDENUMPROC,  # _In_ lpEnumFunc
        wintypes.LPARAM,)  # _In_ lParam

    user32.IsWindowVisible.argtypes = (
        wintypes.HWND,)  # _In_ hWnd

    user32.GetWindowThreadProcessId.restype = wintypes.DWORD
    user32.GetWindowThreadProcessId.argtypes = (
        wintypes.HWND,  # _In_      hWnd
        wintypes.LPDWORD,)  # _Out_opt_ lpdwProcessId

    user32.GetWindowTextLengthW.errcheck = check_zero
    user32.GetWindowTextLengthW.argtypes = (
        wintypes.HWND,)  # _In_ hWnd

    user32.GetWindowTextW.errcheck = check_zero
    user32.GetWindowTextW.argtypes = (
        wintypes.HWND,  # _In_  hWnd
        wintypes.LPWSTR,  # _Out_ lpString
        ctypes.c_int,)  # _In_  nMaxCount

    '''Return a sorted list of visible windows.'''
    result = []
    @WNDENUMPROC
    def enum_proc(hWnd, lParam):
        if user32.IsWindowVisible(hWnd):
            pid = wintypes.DWORD()
            tid = user32.GetWindowThreadProcessId(
                        hWnd, ctypes.byref(pid))
            length = user32.GetWindowTextLengthW(hWnd) + 1
            title = ctypes.create_unicode_buffer(length)
            user32.GetWindowTextW(hWnd, title, length)
            result.append(WindowInfo(hWnd, pid.value, title.value))
        return True
    user32.EnumWindows(enum_proc, 0)
    return sorted(result)

def get_hwnd_by_title(title):
    hwnd = -1
    results = list_windows()
    for i in range(len(results)):
        if results[i].title == title:
            hwnd = results[i].hwnd
            break
    return hwnd

if __name__ == '__main__':
    title = "Counter-Strike"
    hwnd = get_hwnd_by_title(title)
    print(hwnd)