I'm trying to develop a kiosk system using an Orange Pi One (Based on Allwinner H3 - Mali400) running Armbian Xenial   To do this I need to develop a full-screen GUI application (I don't have much experience in this area)   I'm looking for a professional way to do this, Ive spent about a week trying to get Qt to cross-compile from my laptop but not getting much luck,   Any ideas / advice welcome,   Andy