Button next to back button in stacked windows

Hi,
How about if I want to put a Button (or an Action) next to the 'Back' button in stacked windows, just like when I use File Manager to delete one file, there is a 'Delete' button on top of the window, next to the 'Back' button, when I click on delete, it deletes selected files and returns to original window.
How to implement that? I try to use toolbar but no use.

This is Hildon Edit Toolbar, in Qt 4.6 it's implemented in QMaemo5EditBar class
[url]http://doc.qt.nokia.com/qt-maemo-4.6/qmaemo5editbar.html[/url]