python调用dll 指针参数

  

   

    

     

    
    

     

      #coding=utf-8
     
    
   

    

     

    
    

     

      import threading
     
    
   

    

     

    
    

     

      from ctypes import *
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      class DeviceAttribute(Structure):
     
    
   

    

     

    
    

     

       _fields_ = [("vendorId", c_uint16),
     
    
   

    

     

    
    

     

       ("productId", c_uint16),
     
    
   

    

     

    
    

     

       ("deviceAddress", c_uint32),
     
    
   

    

     

    
    

     

       ("serialNumber", c_char * 64),
     
    
   

    

     

    
    

     

       ("uri", c_char * 255)]
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      class Device(Structure):
     
    
   

    

     

    
    

     
 pass
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      deviceAttributeHandle = POINTER(DeviceAttribute)
     
    
   

    

     

    
    

     

      deviceAttributeHandle_p = POINTER(deviceAttributeHandle)
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      dll = CDLL("./Nectaf.dll")
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      a = dll.Initialize()
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      if a!=0:
     
    
   

    

     

    
    

     

       exit(1)
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      print("init ok")
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      deviceCount = c_int(0)
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      GetDeviceList = dll.GetDeviceList
     
    
   

    

     

    
    

     

      GetDeviceList.argtypes = [deviceAttributeHandle_p,POINTER(c_int)]
     
    
   

    

     

    
    

     

      GetDeviceList.restype = c_int
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      # pDeviceAttr = POINTER(POINTER(DeviceAttribute))
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      # dll.GetDeviceList(deviceAttributeHandle_p,byref(deviceCount))
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      deviceAttribute = deviceAttributeHandle()
     
    
   

    

     

    
    

     

      # ret = getDeviceList(byref(self.deviceAttribute), byref(nCount))
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      dll.GetDeviceList(byref(deviceAttribute),byref(deviceCount))
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      print(deviceCount.value)
     
    
  
 

文章来源: blog.csdn.net，作者：网奇，版权归原作者所有，如需转载，请联系作者。

原文链接：blog.csdn.net/jacke121/article/details/110821417