mainwindow.pro Example File

mainwindows/mainwindow/mainwindow.pro

 TEMPLATE = app
 QT += widgets
 requires(qtConfig(combobox))

 HEADERS += colorswatch.h mainwindow.h toolbar.h
 SOURCES += colorswatch.cpp mainwindow.cpp toolbar.cpp main.cpp
 build_all:!build_pass {
     CONFIG -= build_all
     CONFIG += release
 }

 RESOURCES += mainwindow.qrc

 # install
 target.path = $$[QT_INSTALL_EXAMPLES]/widgets/mainwindows/mainwindow
 INSTALLS += target