AnnGroup example for C++ Builder

//Global declarations
LEADRasterAnnotation * pRasterAnn= NULL;
LEADRasterAnnToolBar* pRasterAnnToolbar= NULL;

void __fastcall TForm1::Button1Click(TObject *Sender)
{
   CoCreateInstance(CLSID_LEADRasterAnnotation, NULL, CLSCTX_ALL, IID_ILEADRasterAnnotation, (void**)&pRasterAnn);
   CoCreateInstance(CLSID_LEADRasterAnnToolBar, NULL, CLSCTX_ALL, IID_ILEADRasterAnnToolBar, (void**)&pRasterAnnToolbar);
   pRasterAnn->AnnParentRasterView = LEADRasterView1->Raster;
   LEADEventSink1->Connect (pRasterAnn, DIID__LEADRasterAnnotationEvents);
   pRasterAnn->AnnUserMode = ANN_USERMODE_DESIGN ;
}
void __fastcall TForm1::FormClose(TObject *Sender, TCloseAction &Action)
{
   if (pRasterAnn)
      pRasterAnn->Release ();
   if (pRasterAnnToolbar)
      pRasterAnnToolbar-> Release();
}

void __fastcall TForm1::Button2Click(TObject *Sender)
{
   pRasterAnn->AnnGroup (pRasterAnn->AnnContainer, ANN_FLAG_SELECTED + ANN_FLAG_RECURSE, AnsiToOLESTR(""));
}