Revision control
++ QT += widgets
++
++ HEADERS = layoutitem.h \
++ window.h
++ SOURCES = layoutitem.cpp \
++ main.cpp \
++ window.cpp
++ RESOURCES = basicgraphicslayouts.qrc
++
++ # install
++ target.path = $$[QT_INSTALL_EXAMPLES]/widgets/graphicsview/basicgraphicslayouts
++ INSTALLS += target