I launch the game "warcraft 3" inside VirtualBox in the "Full screen" mode. In spite of this, when you press the Left-Alt key combination + right mouse button during a game, a pop-up Ubuntu window pops up with menu items ("Maximize", "Minimize", and others). Also, when the mouse reaches the screen boundary, the mouse sticks to this position from time to time, which makes the game difficult.

How to make the Ubuntu context not inside VirtualBox?

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  • In the settings of the machine to look? - PinkTux
  • @PinkTux thanks for the response. Carefully looked through all the settings of the machine. Unfortunately, I did not find anything that could contribute to solving my problem. I decided to ask a question here - Matvey Safronov
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    For starters, check if Guest Additions are worth. Then try to switch to the menu Input-> Mouse Integration. - PinkTux

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@PinkTux gave the correct answer in the comments. Made the installation Guest Additions, and turned on the mode "Mouse Integration". Then, by clicking on the virtual box window, in the modal window, clicked "Capture", and the mouse cursor stopped moving off the screen