Don't have Telegram yet? Try it now!
https://bravikov.wordpress.com/2018/01/10/%d1%81%d0%b1%d0%be%d1%80%d0%ba%d0%b0-qt-virtual-keyboard-%d0%b8-%d1%80%d1%83%d1%81%d1%81%d0%ba%d0%b0%d1%8f-%d1%80%d0%b0%d1%81%d0%ba%d0%bb%d0%b0%d0%b4%d0%ba%d0%b0/
Сборка Qt Virtual Keyboard и добавление русской раскладки