No because you need to decler each function to later call it
But if you get error that dll is missing means you already linking QT properly, so or QT messing up something or OS searching them somewherelse tharn it suppose to. Tutorial in static linking shows how to set include and lib directory. And again lest time i played with li rars dll usally has lib which properly link to dll and when use lib you executable or dll start to require dll. Maybe try placeing qt dlls in thirdparty directory of ue4