This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

qt kbd configuration for AM335x Qt 4.8.3

Does the build configuration for AM335x Qt 4.8.3 enable the support for qt kbd? The problem goes into my mind because I can't use USB keyboard to input characters in a Qt embedded app. I have set the QWS_KEYBOARD env variable to below two values, but no luck with me. (USB keyboard's handler is /dev/input/event4)

QWS_KEYBOARD=linuxinput:/dev/input/event4
QWS_KEYBOARD=usb:/dev/input/event4

I check the file:

linux-devkit/sysroots/armv7ahf-vfp-neon-3.2-oe-linux-gnueabi/mkspecs/qconfig.pri

The content is below:

#configuration
CONFIG += def_files_disabled exceptions no_mocdepend release stl qt_no_framework
QT_ARCH = arm
QT_EDITION = OpenSource
QT_CONFIG += minimal-config small-config medium-config large-config full-config qt3support phonon phonon-backend egl opengl opengles2 embedd
ed reduce_exports reduce_relocations ipv6 clock-gettime clock-monotonic mremap getaddrinfo ipv6ifname getifaddrs inotify system-jpeg system-p
ng png system-tiff system-freetype system-zlib glib gstreamer dbus openssl alsa pulseaudio concurrent xmlpatterns multimedia audio-backend sv
g script scripttools declarative release

#versioning
QT_VERSION = 4.8.3
QT_MAJOR_VERSION = 4
QT_MINOR_VERSION = 8
QT_PATCH_VERSION = 3

#namespaces
QT_LIBINFIX = E
QT_NAMESPACE =
QT_NAMESPACE_MAC_CRC =

QT_GCC_MAJOR_VERSION = 4
QT_GCC_MINOR_VERSION = 7
QT_GCC_PATCH_VERSION = 3

However, I can't see anything about qt kbd support. Do I find the right file to see this information?