C++ Example of a SafeArray Dataset

void CMapXView::OnSafeArray() {
 CMapXFields flds;
 CMapXDataset ds;
 COleVariant fldsVt;
 COptionalVariant optVt;
 COleSafeArray theData;

 // Create a 3x2 SafeArray
 unsigned long dims[2] = {3, 2};
 theData.Create(VT_VARIANT, 2, dims);

 // Fill the SafeArray with data
 long indx[2] = {0,0};
 theData.PutElement(indx, COleVariant("ME"));

 indx[0]=1;indx[1]=0;
 theData.PutElement(indx, COleVariant("NH"));

 indx[0]=2;indx[1]=0;
 theData.PutElement(indx, COleVariant("VT"));

 indx[0]=0;indx[1]=1;
 theData.PutElement(indx, COleVariant(100l));

 indx[0]=1;indx[1]=1;
 theData.PutElement(indx, COleVariant(200l));

 indx[0]=2;indx[1]=1;
 theData.PutElement(indx, COleVariant(300l));

 try {
  // Create a new fields object
  flds.CreateDispatch(flds.GetClsid());

  // Describe the structure of the SafeArray, so that our
  // columns will have names after the Datasets.Add
  flds.Add(COleVariant(1l),
   COleVariant("State"),
   COleVariant((long)miAggregationIndividual),

   COleVariant((long)miTypeString));
  flds.Add(COleVariant(2l),
   COleVariant("Sales"),
   COleVariant((long)miAggregationSum),
   COleVariant((long)miTypeNumeric));

  // point fldsVt at our fields object
  fldsVt.vt = VT_DISPATCH;
  fldsVt.pdispVal = flds.m_lpDispatch;
  fldsVt.pdispVal->AddRef();

  // Create a SafeArray dataset
  ds = m_ctrlMapX.GetDatasets().Add(miDataSetSafeArray, theData,
   COleVariant("My Dataset"), COleVariant(1l), optVt, optVt,

   fldsVt, optVt);

  // Create a theme based on the "Sales" column in the
  // new dataset
  ds.GetThemes().Add(miThemeIndividualvalue, "Sales", "My Theme");
 } catch (COleDispatchException *e) {
  e->ReportError();
  e->Delete();
 } catch (COleException *e) {
  e->ReportError();
  e->Delete();
 }
}