Merging projects into one

[fender]

Good morning
I would like to ask advice on how to implement the following
There are three ready projects on Qt that need to be merged into one, that is, when you launch exe, a form with 3 buttons is launched and by clicking on each application you need to open
How to do it right?
QAbstractItemModel, QProcess?

[jsulm]

@fender QProcess if you really want to keep 3 executables. But this not really "merging". An alternative would be to really merge these 3 apps into one executable.

[fender]

@jsulm
I would like to know how to do it right
I would like to get this

The project has already been selected

[jsulm]

@fender What exactly do you want to know?
How to start a process using QProcess?