qt-everywhere-src-5.15.1/qtbase/examples/widgets/layouts/borderlayout/borderlayout.pro

QT += widgets

HEADERS     = borderlayout.h \
              window.h
SOURCES     = borderlayout.cpp \
              main.cpp \
              window.cpp

# install
target.path = $$[QT_INSTALL_EXAMPLES]/widgets/layouts/borderlayout
INSTALLS += target