(This example can only be used after configuring Qwt, I hope it will help you
2\debug\2.exe
2\debug\main.o
2\debug\moc_widget.cpp
2\debug\moc_widget.o
2\debug\plot.o
2\debug\widget.o
2\2.pro
2\2.pro.user
2\main.cpp
2\Makefile
2\Makefile.Debug
2\Makefile.Release
2\ui_widget.h
2\widget.cpp
2\widget.h
2\widget.ui)