flibitijibibo/MonoGame — pull request #59 by sulix (2013-04-29 13:00:06+00:00)
Title: Fix Alt+Tab with fullscreen FBOs

Basically, if you alt-tabbed out of a fullscreen game and alt-tabbed back in, the game would run windowed at the wrong resolution. This patch simply switches to windowed mode on focus lost and back to fullscreen on focus gained.