playmp3.py 文件源码

def __init__ (self):
        import ctypes.wintypes
        if sys.platform[:3] != 'win':
            raise SystemError('Windows is required')
        self.__winmm = ctypes.windll.LoadLibrary('winmm.dll')
        self.__mciSendStringW = self.__winmm.mciSendStringW
        self.__mciGetErrorStringW = self.__winmm.mciGetErrorStringW
        wintypes = ctypes.wintypes
        LPCWSTR, HANDLE = wintypes.LPCWSTR, wintypes.HANDLE
        args = [LPCWSTR, ctypes.c_char_p, wintypes.UINT, HANDLE]
        self.__mciSendStringW.argtypes = args
        self.__mciSendStringW.restype = wintypes.DWORD
        args = [wintypes.DWORD, ctypes.c_void_p, wintypes.UINT]
        self.__mciGetErrorStringW.argtypes = args
        self.__mciGetErrorStringW.restype = wintypes.BOOL
        self.__buffer = ctypes.create_string_buffer('?' * 4098)
        self.__alias_index = 0