Trying to play any older game from the origin launcher.

I guess its best to start with the fact i have a triple monitor set up all running off a nvidia 970 video card. 2 24 inch monites left/right and a 32 in monitor in the center. When ever i try to play battlefield 1942, the older sim city, red alert 2/yuri's revenge etc since upgrading to windows 10. the game seems like its playing in fullscreen. But as soon as i go to the left or right edge of the screen my curser comes out of game, and i select what ever the mouse is over dropping me from game. i just played starwars battle front beta for the last 3 hours so i know its not an issue with game launched from origin, and probably related to win10 and older games. anyone have a fix for this?

Hmm, i have that problem aswell in several games. You can try to run it in compatibility mode and see if that works. If you don't know how to put something into compatibility mode here is a little tutorial:

Right-click a program or a game and then go to the Compatibility section, after that tick the box that says "Run this program in compatibility mode for:" and then i would begin putting into 7, if that didn't work Vista etc.