the touch problem on tiny6410 just for Qt application

I have a problem with my device in touch .
I have an application in Qt. then, I want to hide the cursor shape for my
app on tiny6410(Friendly Arm Linux device). I use this code with this : 

#include <QWSServer>

int main(int argc, char *argv[])

    QApplication a(argc, argv);
    #ifdef Q_WS_QWS
    QWSServer::setCursorVisible( false );

after that when I run my program with this command : ./VS200 -qws it is
running and the pointer does not show BUT , the screen touch is also not
When I change the false to true it shows the pointer but when i touch the
screen to press button the mouse shape is disappear and the touch is not
When I write this command "cat /dev/touchscreen-1wire" the touch is worked
but when the Qt application is run, touch does not work.

This QWS_MOUSE_PROTO=TSLIB:/dev/touchscreen-1wire. and the tslib is setting
on this config.