Make focus in mi window for capture keyboard events

Hello, i am to try catch keyboard ( button mapped ) by events, but the event dont reveiced.

I have bbb with cape lcd7, have serialport, touchscreen etc work fine, but keyboard...dont input event

i put QWS_KEYBOARD to LinuxInput:/dev/input/by-path/platform-gpio_keys.11-event , here is not problem.

I dont know if this issue is for the command focus, but i try to put focus in all sides, nothing

thanks :)