audiorecorder.pro Example File
multimedia/audiorecorder/audiorecorder.pro
  TEMPLATE = app
  TARGET = audiorecorder
  QT += multimedia
  win32:INCLUDEPATH += $$PWD
  HEADERS = \
      audiorecorder.h \
      qaudiolevel.h
  SOURCES = \
      main.cpp \
      audiorecorder.cpp \
      qaudiolevel.cpp
  FORMS += audiorecorder.ui
  target.path = $$[QT_INSTALL_EXAMPLES]/multimedia/audiorecorder
  INSTALLS += target
  QT+=widgets