Test case
1) Start MDI example : examples/mainwindow/mdi
2) Create more than one text document view and modify each
3) Select to close the application, eg File -> Exit
4) When a Dialog display regarding saving changes select "Cancel" for at least one Document
5) Confirm that the application does not quit and that the document view choosen to be continued to edit is still open

Probelm was not solved via using QMdiArea::currentSubWindow().

Problem may be due to the ordering of signals(events).