I have CentOS 7 installed as a guest OS inside VirtualBox running in a Windows 8.1 host machine.  The host is a notebook computer with a touch screen.  The windows host can accept touch screen commands such as pushing submit buttons by pressing the screen, etc.  However, the CentOS 7 guest OS inside VirtualBox does not respond to touchscreen commands.  The CentOS 7 guest uses the gnome UI.  How can I enable the touch screen in the CentOS 7 guest?Is it as simple as yum install rhel-touch-screen-tools?  Or do I need to change distros, do something to VirtualBox, choose a different UI to replace gnome, or some other specific thing that you can explain?
Enable touch screen on CentOS 7
centos;gnome;virtualbox;touch screen