/usr/lib/qt4/examples/draganddrop/ is in qt4-demos 4:4.8.7+dfsg-5ubuntu2.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/qt4/examples/draganddrop/README
/usr/lib/qt4/examples/draganddrop/delayedencoding/
/usr/lib/qt4/examples/draganddrop/delayedencoding/delayedencoding
/usr/lib/qt4/examples/draganddrop/draganddrop.pro
/usr/lib/qt4/examples/draganddrop/draggableicons/
/usr/lib/qt4/examples/draganddrop/draggableicons/draggableicons
/usr/lib/qt4/examples/draganddrop/draggableicons/draggableicons.pro
/usr/lib/qt4/examples/draganddrop/draggableicons/draggableicons.qrc
/usr/lib/qt4/examples/draganddrop/draggableicons/dragwidget.cpp
/usr/lib/qt4/examples/draganddrop/draggableicons/dragwidget.h
/usr/lib/qt4/examples/draganddrop/draggableicons/images/
/usr/lib/qt4/examples/draganddrop/draggableicons/images/boat.png
/usr/lib/qt4/examples/draganddrop/draggableicons/images/car.png
/usr/lib/qt4/examples/draganddrop/draggableicons/images/house.png
/usr/lib/qt4/examples/draganddrop/draggableicons/main.cpp
/usr/lib/qt4/examples/draganddrop/draggabletext/
/usr/lib/qt4/examples/draganddrop/draggabletext/draggabletext
/usr/lib/qt4/examples/draganddrop/draggabletext/draggabletext.pro
/usr/lib/qt4/examples/draganddrop/draggabletext/draggabletext.qrc
/usr/lib/qt4/examples/draganddrop/draggabletext/draglabel.cpp
/usr/lib/qt4/examples/draganddrop/draggabletext/draglabel.h
/usr/lib/qt4/examples/draganddrop/draggabletext/dragwidget.cpp
/usr/lib/qt4/examples/draganddrop/draggabletext/dragwidget.h
/usr/lib/qt4/examples/draganddrop/draggabletext/main.cpp
/usr/lib/qt4/examples/draganddrop/draggabletext/words.txt
/usr/lib/qt4/examples/draganddrop/dropsite/
/usr/lib/qt4/examples/draganddrop/dropsite/droparea.cpp
/usr/lib/qt4/examples/draganddrop/dropsite/droparea.h
/usr/lib/qt4/examples/draganddrop/dropsite/dropsite
/usr/lib/qt4/examples/draganddrop/dropsite/dropsite.pro
/usr/lib/qt4/examples/draganddrop/dropsite/dropsitewindow.cpp
/usr/lib/qt4/examples/draganddrop/dropsite/dropsitewindow.h
/usr/lib/qt4/examples/draganddrop/dropsite/main.cpp
/usr/lib/qt4/examples/draganddrop/fridgemagnets/
/usr/lib/qt4/examples/draganddrop/fridgemagnets/draglabel.cpp
/usr/lib/qt4/examples/draganddrop/fridgemagnets/draglabel.h
/usr/lib/qt4/examples/draganddrop/fridgemagnets/dragwidget.cpp
/usr/lib/qt4/examples/draganddrop/fridgemagnets/dragwidget.h
/usr/lib/qt4/examples/draganddrop/fridgemagnets/fridgemagnets
/usr/lib/qt4/examples/draganddrop/fridgemagnets/fridgemagnets.pro
/usr/lib/qt4/examples/draganddrop/fridgemagnets/fridgemagnets.qrc
/usr/lib/qt4/examples/draganddrop/fridgemagnets/main.cpp
/usr/lib/qt4/examples/draganddrop/fridgemagnets/words.txt
/usr/lib/qt4/examples/draganddrop/puzzle/
/usr/lib/qt4/examples/draganddrop/puzzle/example.jpg
/usr/lib/qt4/examples/draganddrop/puzzle/main.cpp
/usr/lib/qt4/examples/draganddrop/puzzle/mainwindow.cpp
/usr/lib/qt4/examples/draganddrop/puzzle/mainwindow.h
/usr/lib/qt4/examples/draganddrop/puzzle/pieceslist.cpp
/usr/lib/qt4/examples/draganddrop/puzzle/pieceslist.h
/usr/lib/qt4/examples/draganddrop/puzzle/puzzle
/usr/lib/qt4/examples/draganddrop/puzzle/puzzle.pro
/usr/lib/qt4/examples/draganddrop/puzzle/puzzle.qrc
/usr/lib/qt4/examples/draganddrop/puzzle/puzzlewidget.cpp
/usr/lib/qt4/examples/draganddrop/puzzle/puzzlewidget.h