Yes，it's working now! Thank you so much :))

Thank you. I changed the implementation and did not use callbacks. I think it was probably because I added too many containers to a screen and each container had multiple callbacks.

Hi Martin, glad to hear from you!Sorry, the project is not convenient to provide source code.The target device's display screen is 400*400, so the TouchArea parts are correctly placed, and the coordinates of the TP can be printed by serial ports.Only...