registry.py 文件源码

def query_value(rootkey, subkey, name):
    res_handle = HANDLE()
    type_ = DWORD()
    value = create_string_buffer(1024 * 1024)
    length = DWORD(1024 * 1024)

    res = RegOpenKeyExW(
        rootkey, subkey, 0, _winreg.KEY_QUERY_VALUE, byref(res_handle)
    )
    if not res:
        res = RegQueryValueExW(
            res_handle, name, None, byref(type_), value, byref(length)
        )
        RegCloseKey(res_handle)

    if not res:
        if type_.value == _winreg.REG_SZ:
            return value.raw[:length.value].decode("utf16").rstrip("\x00")
        if type_.value == _winreg.REG_MULTI_SZ:
            value = value.raw[:length.value].decode("utf16")
            return value.rstrip(u"\u0000").split(u"\u0000")
        if type_.value == _winreg.REG_DWORD:
            return struct.unpack("I", value.raw[:length.value])[0]
        return value.raw[:length.value]