QT += widgets !isEmpty(QT.printsupport.name): QT += printsupport HEADERS = mainwindow.h SOURCES = main.cpp \ mainwindow.cpp RESOURCES = dockwidgets.qrc # install target.path = $$[QT_INSTALL_EXAMPLES]/widgets/mainwindows/dockwidgets INSTALLS += target simulator: warning(This example might not fully work on Simulator platform)