With most modern OSes, VirtualBox allows you to seamlessly move your mouse between your host and guest system.
One that may affect you, depending on the guest OS, is seamless mouse integration. There are a few other useful perks to installing them, though these are not as generally useful. The above functions are the main features of VirtualBox's Guest Additions. Other Benefits of VirtualBox Guest Additions Hit Host + L again to turn this off-if it doesn't seem to work, make sure you select the VirtualBox VM first.ĥ. You're then free to use its windows with your regular desktop software.
Once you've done this, the VM will go full-screen and VirtualBox will remove its background.