auto excel     = new QAxObject("Excel.Application");
auto workbooks = excel->querySubObject("Workbooks");
auto workbook  = workbooks->querySubObject("Open(const QString&)","c:\\temp\\test.xlsx");
auto sheets    = workbook->querySubObject("Worksheets");
auto sheet     = sheets->querySubObject("Item(int)", 1);

// read the first cells in row 1..5
for (int r = 1; (r <= 5); ++r)
{
    auto cCell = sheet->querySubObject("Cells(int,int)",r,1);
    qDebug() << cCell->dynamicCall("Value()").toInt();
}