QProcess - How show/hide external application

I'm trying to made an application that does the followig operation:
1) able to start an external program
2) show/hide external application when required
3) set on top or not the external program

I'm using QT to be able to easily move the code to another target.
I found QProcess object that allows to start an external program, but with QProcess I did'n found how to show/hide and mainly how to manage the external program, I'm able only to kill it.

Is there someone that can help me????

QProcess launches a external program, but it does not have any control on show/hide. one thing what i can suggest is to put all the commands inside a windows batch file and invoke that batch file from QProcess.