my touch operation is not work when I use this code QWSSERVER::SetCursorVisible

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

Code:

---

#include <QWSServer>
 
int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
   #ifdef Q_WS_QWS
   QWSServer::setCursorVisible( false );
   #endif

---

after that when I run my program with this command :

Code:

---

./VS200 -qws

---

it is running and the pointer does not show BUT , the screen touch is also not work.
When I change the

Code:

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false

---

to

Code:

---

true

---

it shows the pointer but when i touch the screen to press button the mouse shape is disappear and the touch is not work.
How can I solve this problem ?
How QWSSERVER::SetCursorVisible change the Linux setting?
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NOTE: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.