QT += concurrent widgets SOURCES += main.cpp imagescaling.cpp HEADERS += imagescaling.h target.path = $$[QT_INSTALL_EXAMPLES]/qtconcurrent/imagescaling sources.files = $$SOURCES $$HEADERS $$FORMS $$RESOURCES *.pro *.png sources.path = $$[QT_INSTALL_EXAMPLES]/qtconcurrent/imagescaling INSTALLS += target sources wince*: DEPLOYMENT_PLUGIN += qgif qjpeg simulator: warning(This example does not work on Simulator platform)