"""
无效句柄管理
某些句柄在获取窗口名称时会卡死，需要过滤掉这部分窗口
"""
import os

__PATH = r"../res/invalid_hwnds.txt"


def add_hwnd(hwnd):
    olds = get_hwnds()
    if hwnd in olds:
        return
    with open(__PATH, mode='a') as f:
        f.write(str(hwnd))
        f.write("\n")


def get_hwnds():
    hwnds = []
    if os.path.exists(__PATH):
        with open(__PATH, mode='r') as f:
            lines = f.readlines()
            for line in lines:
                if line:
                    hwnds.append(int(line.strip()))
    return hwnds