I would like to clarify my question:
1) Does model->clear() remove all the QStandardItem objects from memory? If not, then how do I remove them?
2) Do I have to remove the model itself manually or it will be removed automatically when the parent is destroyed?

The way memory is used and then reclaimed by these objects is not explained clearly in the manuals. I use QT Creator on windows 7.0 32 bit.

Thanks...