hi,

let me change the question. i have a serial touch screen interfaced to /dev/ttyS1 . how to enable it in qt-embedded-3.3.5 ?
in the configure option i saw options for USB touch screens (touch screens connected to /dev/input/event0).but there were no options for serial touch screens. i gave "-qt-mouse-linuxtp" in the configure option and export the environment variables as follows:

export TSLIB_CALIBFILE=/etc/pointercal
export TSLIB_CONFFILE=/etc/ts.conf
export TSLIB_PLUGINDIR=/usr/lib/ts
export TSLIB_TSDEVICE=/dev/ttyS1.

and
export QTDIR=/usr/local/qt-embedded
export QWS_MOUSE_PROTO=linuxtp:/dev/ttyS1

when i execute a qt application , the touch screen did not work and the mouse pointer disappears the moment i touch the touch screen. the following error is displayed :

"Could not read calibration: /etc/pointercal".

any suggestions or solutions for this ?