主题：全部代码中字符串指针如何处理？

试试这样

 

Public Declare Function dc_load_key Lib "Trf32.dll" (ByVal icdev As Long, ByVal mode, ByVal secnr, ByRef nkey As StringBuilder) As Long

 

调用

 

Dim Hexkey As new StringBuilder
Hexkey.append("ffffff")
secnr = 1
Result = dc_load_key(Vars("IcDev"),  0, 1, Hexkey)

 这样试试

 

Dim Hexkey As new Stringbuilder(24)

Hexkey.append("ffffffffffffffffffffffff")

 

 再不行，就尝试用char[]数组作为参数。

 你的设备有没有vb.net 或者 c#等的例子？如果有，就照抄

 如果用数组，这样定义

 

Public Declare Function dc_load_key_hex Lib "Trf32.dll" (ByVal icdev As Long, ByVal mode%, ByVal secnr%, ByRef nkey As Byte()) As Long

 看楼上

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