Revision control
++ TEMPLATE = app
++ TARGET = screencapture
++
++ QT += multimedia multimediawidgets
++ CONFIG += add_ios_ffmpeg_libraries
++
++ HEADERS = \
++ screencapturepreview.h \
++ screenlistmodel.h \
++ windowlistmodel.h
++
++ SOURCES = \
++ main.cpp \
++ screencapturepreview.cpp \
++ screenlistmodel.cpp \
++ windowlistmodel.cpp
++
++ target.path = $$[QT_INSTALL_EXAMPLES]/multimedia/screencapture
++ INSTALLS += target