qml - how to show 2 different active qt application on two different surfaces in a single screen for imx6 board -

how show 2 different active qt application on 2 different surfaces in single screen imx6 board?

[edit] suppose there 2 application.mediaplayer , phone app.when mediaplayer running ,if tries call ,a pop show on top of mediaplayer accept or reject.so,there 2 separate surface in single screen , on accepting app change phone app screen , on reject there in player screen.

[edit] both application individual i.e media player songs , phone calling.how possible combine in single app because in case if incoming call there pop appear on top of mediaplayer , on accept go phone screen.if can give logic solution better me.

any appreciated.