Stuck in Windowed mode, how do I get into full screen?

[City Planner 121]

I'm not sure what has happened, but my game seems to want to play in windowed mode instead of full screen.

I have dual monitors and when I fire up XL, my mouse can leave the screen that the game is on and go to my other monitor and thus pull me out of the game (which many times causes the display driver to stop responding).

I've set my resolution to my monitors (and my desktop) resolution which is 1920x1200 60 (hertz I suppose) and once it did actually go into full screen mode where my mouse was retained to the one monitor, but when I launch the game now it is no longer in full screen and my mouse can leave the game screen.

Is there a way to force the game into full screen mode so that my mouse is contained to just the one monitor while playing the game?

Thanks,

[cm39 0]

You made the same error as me....an old SC4 habit to press the F2 key....just press F2 again and the game will be back in full mode!!!!