Touch events are not completely handled by the application but are also forwarded to the Raspberry Pi background

Question

Hi,

I have a EmWiApplication (v8.3) running on the Raspberry Pi 3 using the official touchscreen.
When I start the application everything works just fine but when I close it I notice that there are some programs etc. open even though at start there was only the terminal open.
So I found out that the touch-events are not completely handled by the application.
I tried to put a simple-touch-handler over the whole screen to handle all touch events but it still does things in the background.

Best regards,
Oliver

Answer 1

Hi Oliver,

Just for the avoidance of doubts: Are you using some X11/Wayland Weston based GUI application including a window manager? If yes, then the reported behavior is correct, because Embedded Wizard reads directly the touch events from the Kernel driver via /dev/input/event*. So if there's an additional application running (like a window manager), the touch events are shared between both apps as Embedded Wizard does not grab the events exclusively. Does that shed some lights on that?

Best regards,
Manuel

Comments

Hi Manuel,

thanks for the quick answer. Yes I use a X11 based application. With this information it should be possible to solve the problem.

Best regards,

Oliver