I've got other test and we have two scenarios:
1) If I use QAxWidget->setControl("C:\file.xls") I see the sheet into my control (as I like) but... I can't fill its cells programmaticaly: the querySubObject() and dynamicCall() aren't available in this configuration and raise segmentation fault error.
2) If I use QAxWidget->setControl("Excel.Application") I can work programmatically on my excel file, but... the file won't embedded into my QAxWidget that it remain white.

So, how can Got the 1.5 possibility ? How programmatically change a file embedded by setControl()?

Thanks a lot for your time

Michele

PS. I've opensource version of QT