database\course.cpp
........\course.h
........\course.ui
........\database.h
........\login.cpp
........\login.h
........\login.ui
........\main.cpp
........\query.cpp
........\query.h
........\query.ui
........\select.cpp
........\select.h
........\select.ui
........\stucourse.cpp
........\stucourse.h
........\stucourse.ui
........\test.pro
........\test.pro.user
........\widget.cpp
........\widget.h
........\widget.ui
database