vc++原形如下(其中:version返回的版本信息):
int GetDeviceVersion ( int device , int devicegroup , char * version , int * len )  ;

在vb中，是：
Public Declare Function GetDeviceVersion Lib "ND80Driver.dll" Alias "_GetDeviceVersion@16" (ByVal device As Integer, ByVal devicegroup As Integer, Byref version As byte, ByRef len1 As Integer) As Integer

还是:
Public Declare Function GetDeviceVersion Lib "ND80Driver.dll" Alias "_GetDeviceVersion@16" (ByVal device As Integer, ByVal devicegroup As Integer, ByRef version As String, ByRef len1 As Integer) As Integer

或还是其它,请问他们又怎么调用呢?

怎么没有人回答呢?

谢谢也可以用byte

Declare Function GetDeviceVersion Lib "*.dll"(byval device as integer,byval devicegroup as integer,byref version as byte,byref Len1 as integer)as integer 'C中的字符串和VB中的字符串定义不一样，最好是用Byte数组代替，但VB中不能定义数组参数，只能用Any来代替，在调用时在使用数组指针。如：
Dim Byte1(255) as byte
GetDeviceVersion device,devicegroup,byte1(0),len1