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[Delsus]

I use an AutoHotKey script, so when I press Ctrl+h it is mapped as the scroll lock key works fine.

Link to AutoHotKey http://www.autohotkey.com/

Its as simple as editing the default script to ^h::ScrollLock

^ = Ctrl, h = h key and ScrollLock means the combination maps the scroll lock key (the :: is required as well)

Its that easy, then before you open FFXIV, just open AutoHotKey before hand and the script will run automatically.

Edit:

change the shortcut in config........

Last I checked you could not map the key to hide windows, it just wasn't in config.