Need a display port monitor that has aspect ratio control

[miked1883]

Any suggestions?

I'd like to get my father a 23" + widescreen 1080p monitor, but it must be display port (only open space on the video card and required for 3 monitors).

It also must be able to display 4:3 ratio screens without distortion (by putting up black bars on the right and left side). My dad still plays a lot of wc3 which gets distorted on regular widescreen monitors.

Any suggestions? I have been looking on Newegg at 1080p display port monitors but the aspect ratio control feature is not listed in the details (although I'm sure some of them must have it).

[Jmatt110]

http://gaming.benq.com/gaming-monitor/xl2420t/specification/#skip