Hello, I do not why, but my struct in not being correctly initialized. Everything looks like fine, but is not working. How can I write my Structure class? My new in JNA, so sorry for these questions. My HSymTbl in JNA is:

public static class HSymTbl extends Structure { public static class ByValue extends HSymTbl implements Structure.ByValue{ } public long pSymTbl; public long length; }

I think that I have problems with pointers. I am going to post parts of my code here to help (in JNA and Visual C++). The source in Visual C++ is provided by fabricant of DLL.

*System.setProperty("jna.library.path", "C:\\sranger");* SignalRangerInterface sranger = (SignalRangerInterface)Native.loadLibrary("SRanger_HL", SignalRangerInterface.class); String boardId = "Ranger0"; PointerByReference hDev = new PointerByReference(); //HSymTbl sym = new HSymTbl(); HSymTbl.ByValue by = new HSymTbl.ByValue(); short AICp[] = new short[33];

AICp[0]=8;AICp[1]=25168;AICp[2]=16976;AICp[3]=8784;AICp[4]=592;AICp[5]=25168;

AICp[6]=16976;AICp[7]=8784;AICp[8]=592;AICp[9]=25601;AICp[10]=17409; AICp[11]=9217; AICp[12]=1025;AICp[13]=25601;AICp[14]=17409;AICp[15]=9217; AICp[16]=1025;AICp[17]=26113; AICp[18]=17921;AICp[19]=9729;AICp[20]=1537;AICp[21]=26113;AICp[22]=17921;AICp[23]=9729; AICp[24]=1537;AICp[25]=26639;AICp[26]=18447;AICp[27]=10255;AICp[28]=2063;AICp[29]=26639; AICp[30]=18447;AICp[31]=10255;AICp[32]=2063;

*int value = sranger.Initialize_HL(boardId, hDev);* short nbWords = 33; long dspAddress = -1; int ret = 0;

*value = sranger.LoadUser_HL(hDev, path, by);*

if (value == 0) { *ret = sranger.K_Move_Data_HL(hDev, 0, nbWords, AICp, dspAddress, 1, "_aicreg", by);* JOptionPane.showMessageDialog(null, "Codigo carregado com sucesso: " + value); if (ret == 0) { JOptionPane.showMessageDialog(null, "KMove Ok: " + ret); } else { JOptionPane.showMessageDialog(null, "KMove ferrou: " + ret); } }else{ JOptionPane.showMessageDialog(null, "Erro ao carregar codigo: " + value); }

Well, this is the Java code. Now, I write the Visual C++ code and I would like to know if my Java code is correct.

---------------------------------------------------------------------------------------------------------------------------------- Where refnum is void **refnum;

PCHAR Board_id="Ranger0"; int ret;

// Call Initialize_HL (refnum is define at the beginning of this file)

* ret=Initialize_HL(Board_id,&refnum);*

unsigned short AICp[34];

AICp[0]=8;AICp[1]=25168;AICp[2]=16976;AICp[3]=8784;AICp[4]=592;AICp[5]=25168;

AICp[6]=16976;AICp[7]=8784;AICp[8]=592;AICp[9]=25601;AICp[10]=17409;AICp[11]=9217;

AICp[12]=1025;AICp[13]=25601;AICp[14]=17409;AICp[15]=9217;AICp[16]=1025;AICp[17]=26113;

AICp[18]=17921;AICp[19]=9729;AICp[20]=1537;AICp[21]=26113;AICp[22]=17921;AICp[23]=9729;

AICp[24]=1537;AICp[25]=26639;AICp[26]=18447;AICp[27]=10255;AICp[28]=2063;AICp[29]=26639; AICp[30]=18447;AICp[31]=10255;AICp[32]=2063;

// Load Demo2_sr.out

char path[]="Demo2_sr.out"; unsigned short buffer[10]; int ret,rettem;

// refnum and Sym are define at the beginning of this file

* ret=LoadUser_HL(&refnum,path,&Sym);*

rettem=-1;

if (ret==0) { // Load AIC parameters (_aicreg)

* rettem=K_Move_Data_HL(&refnum,FALSE,33,&AICp[0],-1,1,"_aicreg",Sym);*

Where the bold text is the functions of DLL that I need. I am going to post the signatures of java functions and the C++ function, for comparasion. I cannot see the errors, the type mapping is correct? I do not get compiler errors and do not get execution error, just does not work.

Java Assignatures:

public interface SignalRangerInterface extends Library { public int Initialize_HL(String boardId, PointerByReference hDev); public int LoadUser_HL(PointerByReference hDev, String filePath, SignalRanger.HSymTbl pSymTable); public int K_Move_Data_HL(PointerByReference hDev, int rw, short nbWords, short[] buffer, long dSPAdrress, int memSpace, String symbol, SignalRanger.HSymTbl.ByValue symTable); public int ExecUser_HL(PointerByReference hDev, long dSPAddress, String symbol, SignalRanger.HSymTbl.ByValue pSymTable); public int Load_Kernel_HL(PointerByReference hDev); public int DriverClose_HL(PointerByReference hDev); public int Find_Label_HL(String label, SignalRanger.HSymTbl.ByValue symTable); }

C++ signatures

int Initialize_HL(PCHAR BoardID,void ** hDev); int K_Move_Data_HL(void ** hDev,BOOL RW,unsigned short Nb_Words, unsigned short * Buffer,signed long DSPAddress, int MemSpace,char * Symbol,struct HSymTbl SymTable);

LoadUser_HL(void ** hDev,char * FilePath,struct HSymTbl * pSymTable);

Sorry for a so long e-mail, but I need to solve this problem. Thank so much for help and understanding.

2008/11/7 Timothy Wall <twal...@dev.java.net>