OPCHDA ReadRaw: how to pass [in, out] structures?

[Andrey Romanenko]

Hello,

This has been asked on the list already and the solution has apparently been found but no details were given:

https://sourceforge.net/projects/j-interop/forums/forum/600730/topic/1922535

and later

https://sourceforge.net/p/j-interop/discussion/600730/thread/390f67c8/

but I cannot get it to work and hence my request for help.

I am working on the implementation of the OPC HDA ReadRaw method and it requires to pass two [in, out] structure pointers

typedef struct tagOPCHDA_TIME
{
BOOL bString;
[string] LPWSTR szTime;
FILETIME ftTime;
}
OPCHDA_TIME;

The call is

HRESULT ReadRaw(
[in, out] OPCHDA_TIME htStartTime,
[in, out] OPCHDA_TIME htEndTime,
[in] DWORD dwNumValues,
[in] BOOL bBounds,
[in] DWORD dwNumItems,
[in, size_is(dwNumItems)] OPCHANDLE phServer,
[out, size_is(,dwNumItems)] OPCHDA_ITEM ppItemValues,
[out, size_is(,dwNumItems)] HRESULT* ppErrors
);

I do it the following way but it results in 0x800706F7 (Stub received bad data) error:

    callObject.addInParamAsPointer(new JIPointer(startTime.toStruct(), true), JIFlags.FLAG_NULL);
    callObject.addInParamAsPointer(new JIPointer(endTime.toStruct(), true), JIFlags.FLAG_NULL);

    callObject.addInParamAsInt(nValues, JIFlags.FLAG_NULL);
    callObject.addInParamAsBoolean(bounds, JIFlags.FLAG_NULL);
    callObject.addInParamAsInt(handles.length, JIFlags.FLAG_NULL);
    callObject.addInParamAsArray(new JIArray(handles, true), JIFlags.FLAG_NULL);

    // this is to get OPCHDA_Time structures back
    callObject.addOutParamAsObject(new JIPointer(OPCHDATime.getStruct()), JIFlags.FLAG_NULL);
    callObject.addOutParamAsObject(new JIPointer(OPCHDATime.getStruct()), JIFlags.FLAG_NULL);

    callObject.addOutParamAsObject(new JIPointer(new JIArray(OPCHDAItem.getStruct(), null, 1, true)), JIFlags.FLAG_NULL);
    callObject.addOutParamAsObject(new JIPointer(new JIArray(Integer.class, null, 1, true)), JIFlags.FLAG_NULL);

    Object result[] = Helper.callRespectSFALSE(getCOMObject(), callObject);

Can anybody please let me know what might be wrong? Is this the correct way to work with [in, out] agruments?

I also see that sometimes people pass Integers instead of Booleans in the arguments, I have tried both ways in this call and the result is the same. So I assume the problem is elsewhere.

Thanks a lot.

Best regards,
AR

[Andrey Romanenko]

Hello,

I would really appreciate it if somebody could share their thoughts on this.

Thanks.

AR