There are two ways to use multiple monitors in Windows.
The easiest is to "Extend" the desktop to the new monitor, which is probably what you did.
Unfortunately FSX has a hard time using more than one screen.Here's thee "Extended" monitors with FSX running in "borderless" mode on the middle monitor.The other way depends on your graphic card.
I've been using AMD Eyefinity cards for a long time because they made it extremely simple, not to mention cheap, to use multiple monitors.
Under Eyefinity you can merge from two to six monitors into one single monitor
, at least as far as Microsoft Windows knows.
After you create a "single" monitor out of three monitors, FSX is very happy filling it up.
I don't know if NVidia has a similar function.
I do know that there are other ways to make FSX cover two or more monitors, but I've never needed to do it.
For me, the best way to use FSX on multiple monitors has been to switch to Prepar3d. You just have to commit yourself to use Prepar3d to learn "something". LM doesn't make it all that clear what you have to learn.
And they do state that you can learn in the comfort of your home.
Me, I like to "learn", and practice, simple navigation. Seriously, I think that it's fun.Back to Prepar3d and multiple monitors
To make it simple for me, I'll use two monitors.This is what Prepar3d and Windows see on two "Extended" monitors.You, of course, will have a bezel dividing the screens, so this is what you'll see.
Now the way to make Prepar3d span two or more monitors is to place the Prepar3d window so that it's stretched across all of the monitors.Again, this is just two monitors. If you had three monitors, you'd have to stretch that window so that it had a portion in each of the monitors.
If you had six monitors, you'd stretch the basic Prepar3d window across all of them. You don't need to fill all of the monitors, just have a portion of that window in each monitor.OK, OK. Here's a three monitor view.
Once you have that done, you hold down the Alt
key and hit EnterPrepared will go from this To this (just imagine the bezels yourself)