fFeatures needs to equal 2194? - c++

Question

Currently, I am trying hard to get a safearray of variants to work in my c++ code below. As you can see I call QueueInputReport which has a signature of (SAFEARRAY * psainputreport, UNIT timeoutduration):
CComSafeArray<VARIANT> savt;
//LONG j[5];
LONG length = 4;
//SafeArrayLock(psaValues);
for(LONG i = 0; i <= length; ++i)
{
//j[i] = i;
MessageBox(NULL,L"inputreport assigned to variable",NULL,NULL);
//VariantInit(&pDescriptorData[i]);
//pDescriptorData[i].vt = VT_UI1;
//pDescriptorData[i].bVal = inputreport[i];
//SafeArrayPutElement(psaValues,&i,&pDescriptorData[i]);
// VariantClear(&pDescriptorData[i]);
savt.Add(CComVariant(inputreport[i]));
}
//SafeArrayUnlock(psaValues);
MessageBox(NULL,L"data is successfully assigned to safearray",L"correct data format",NULL);
//FADF_STATIC+FADF_FIXEDSIZE+FADF_HAVEVARTYPE+FADF_VARIANT;
/* _TCHAR szBuffer2[100];
_stprintf_s(szBuffer2, _T("%i"),&psaValues->fFeatures);
MessageBox(NULL,L"safe array type",szBuffer2,NULL);*/
piSoftHidDevice1[devindex]->QueueInputReport(savt,8);
piSoftHidDevice1[devindex]->StartProcessing();
piSoftHidDevice1[devindex]->StopProcessing();
Edit: below is the code for queueinputreport which I needed to pass data to.
STDMETHODIMP CHIDDevice::QueueInputReport( SAFEARRAY* psaInputReport, UINT timeoutDuration )
/*++
Routine Description: Queues additional input reports
Arguments:
IdleTimeout - used to set the value of the log level
Return value:
S_OK
--*/
{
VARIANT * pArrayData = NULL;
UINT cbData = 5;
LONG lLBound = 0;
LONG lUBound = 0;
HRESULT hr = S_OK;
HID_INPUT_REPORT inputReport;
BOOLEAN result = TRUE;
// Initialize Structure
inputReport.timeout = timeoutDuration;
inputReport.cbInputReport = 0;
inputReport.pbInputReport = NULL;
MessageBox(NULL,L"report initialized",L"initial report",NULL);
// Get SAFEARRAY size
IfFailHrGo(SafeArrayGetLBound(psaInputReport, 1, &lLBound));
IfFailHrGo(SafeArrayGetUBound(psaInputReport, 1, &lUBound));
IfFalseHrGo(lUBound > lLBound, E_UNEXPECTED);
cbData = lUBound - lLBound + 1;
//psaInputReport->fFeatures = 0x892;
//psaInputReport->fFeatures = 0x892;
inputReport.pbInputReport = (BYTE*)CoTaskMemAlloc( cbData * sizeof(BYTE) );
_TCHAR szBuffer3[100];
_stprintf_s(szBuffer3, _T("%i"), &psaInputReport->fFeatures);
MessageBox(NULL,L"array content features",szBuffer3,NULL);
// If the memory Allocation fails, then fail and exit
if( inputReport.pbInputReport == NULL )
{
hr = E_UNEXPECTED;
goto Exit;
}
//void HUGEP** cast orginally
IfFailHrGo( SafeArrayAccessData( psaInputReport,
reinterpret_cast<void HUGEP**>(&pArrayData) ) );
// Step through the SAFEARRAY and populating only BYTE input report
// and bail out if the type is not correct
for( LONG i = 0; i <= lUBound; ++i )
{
if (pArrayData[i].vt == VT_UI1)
{
inputReport.pbInputReport[i] = pArrayData[i].bVal;
}
else
{
hr = E_FAIL;
goto Exit;
}
}
SafeArrayUnaccessData(psaInputReport);
inputReport.cbInputReport = cbData;
//MessageBox(NULL,L"report being sent next",L"sent report",NULL);
// Add the report to the input queue (does a shallow copy so no need to free the array data)
result = m_InputReportQueue.insert( inputReport );
if (result == FALSE)
{
MessageBox(NULL,L"failed to queue the input",NULL,NULL);
hr = E_FAIL;
}
return hr;
Exit:
SafeArrayUnaccessData(psaInputReport);
if( FAILED(hr) )
{
CoTaskMemFree(inputReport.pbInputReport);
}
return hr;
}
Edit: The problem is I need the fFeatures to equal 2194 and it is currently its a very high number. What could I be doing wrong?
In vbscript, I have some working code for the queueinputreport:
........(too numerous code to list here but it represents the device I am sending input to (i.e. device #1,#2,#3))
Here's some more information on the fFeatures Iam talking about:
http://msdn.microsoft.com/en-us/library/cc237824.aspx
Dim inputreport(5)
inputreport(0) = CByte(0)
inputreport(1) = CByte(100)
inputreport(2) = CByte(100)
inputreport(3) = CByte(0)
inputreport(4) = Cbyte(0)
pisofthiddevice1(i).QueueInputReport(inputreport, 8)
However, when I try replicating this in C++ above it does not work.