Hi. I am having a great deal of trouble with some of the documentation in Qt4. I have spent a lot of time on just these 2 VERY BASIC items

Qt3: text = listBox ->text ( index ); and/or item index from QListBox. how in QListView or QListWidget or ???

Qt3: textEdit-> undo & textEdit->redo
in Qt4 I can find out if they are enabled, but not how to use them.

I would appreciate some help
thanks