win32gui_struct.py 文件源码

def PackDEV_BROADCAST_DEVICEINTERFACE(classguid, name=""):
    if win32gui.UNICODE:
        # This really means "is py3k?" - so not accepting bytes is OK
        if not isinstance(name, unicode):
            raise TypeError("Must provide unicode for the name")
        name = name.encode('unicode-internal')
    else:
        # py2k was passed a unicode object - encode as mbcs.
        if isinstance(name, unicode):
            name = name.encode('mbcs')

    # 16 bytes for the IID followed by \0 term'd string.
    rest_fmt = "16s%ds" % len(name)
    # _make_memory(iid) hoops necessary to get the raw IID bytes.
    rest_data = (_make_memory(pywintypes.IID(classguid)), name)
    return PackDEV_BROADCAST(win32con.DBT_DEVTYP_DEVICEINTERFACE, rest_fmt, rest_data)

# An object returned by UnpackDEV_BROADCAST.