Switching by hotkeys between workspaces with VirtualBox instance

Question

I faced following usability issue:

when have one of workspaces with focused VirtualBox instance within it,that can't switch between workspaces by Super+E or by Ctrl+Alt+Arrow.

Is it possible to solve it? (VirtualBox is Win XP guest edition and Kubuntu,host is Ubuntu 10.10)

Solution 1

In Virtual Box Manager select Preferences -> Input and deselect Auto Capture Keyboard to prevent the virtual machine to capture all keystrokes of the host when activated:

Solution 2

Press the "host key" (by default: right Control on PC; left Command key on Mac)

The host key gives the control of the keyboard to the host which makes it possible to easy change desktop with Ctrl+Alt+Arrow etc.

More can be read on: https://www.virtualbox.org/manual/ch01.html