_lib.py 文件源码

def _parse_typedefs(self):
        """
        Determines the ctypes data types of the Task and Cal handles 
        based on the version of the NI-DAQmx driver installed.
        """
        from nidaqmx.system.system import System
        system = System.local()

        # If DAQmx 8.8 and lower, TaskHandle is a typedef for uInt32 since
        # DAQmx didn't support 64-bit applications then.
        version = system.driver_version
        if version.major_version <= 8 and version.minor_version <= 8:
            self._task_handle = ctypes.c_uint
        else:
            self._task_handle = ctypes.c_void_p

        self._cal_handle = ctypes.c_uint