File list (Check if you may need any files):
calculator\button.cpp
..........\button.h
..........\button.o
..........\calculator
..........\calculator.cpp
..........\calculator.h
..........\calculator.o
..........\calculator.pro
..........\calculator.pro.user
..........\debug\button.o
..........\.....\calculator.exe
..........\.....\calculator.o
..........\.....\main.o
..........\.....\moc_button.cpp
..........\.....\moc_button.o
..........\.....\moc_calculator.cpp
..........\.....\moc_calculator.o
..........\main.cpp
..........\main.o
..........\Makefile
..........\Makefile.Debug
..........\Makefile.Release
..........\moc_button.cpp
..........\moc_button.o
..........\moc_calculator.cpp
..........\moc_calculator.o
..........\debug
..........\release
calculator