• Post Reply
  • Bookmark Topic Watch Topic
  • New Topic

CHAR** and JNA mapping

 
Mathias Nilsson
Ranch Hand
Posts: 367
  • 0
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
I'm very new to JNA and have just succeded in some simple samples. I
now have this function in my h file

__declspec(dllexport) ADK_ERROR __stdcall AdkGetStr(ADK_DATA* pData,
INT iFieldId, CHAR** ppsValue, INT iLen);

Jnarator project set this up as

ByValue AdkGetStr(ADK_DATA pData, int iFieldId, PointerByReference
ppsValue, int iLen);

The ADK_DATA works already since I have used it in oth calls but I
can't succeed to map the CHAR**. I don't know how to use the
PointerByReference.

This is what I've got so far.

PointerByReference ref = new PointerByReference();
ByValue b = lib.AdkGetStr(pData, 12, ref , 16);

I have tested a lot of different values for iLen but it should be 16
since the string that is returned is max 16 characters. Any pointers?
 
It is sorta covered in the JavaRanch Style Guide.
  • Post Reply
  • Bookmark Topic Watch Topic
  • New Topic