I was wondering if the mobile UDK uses Scaleform or some other method for doing menus and game UI. I saw mention of something about canvas based ui in the release notes, but could not find any specific docs about it.
You should also look at how Epic Citadel does it. Like MobileMenuPause.uc or MobileMenuControls.uc
While playing around with UDK Mobile I just extended/modified those and it worked out nicely.
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