The QT5.3 QML Does NOT responding my electromagnetic pen

I am new to QT.
I downloaded QT 5.2.1 and QT 5.3 SDK ( msvc2013 32bit ).

I complied two examples called "gallery" and "touch" in QT 5.3.0.

In QT 5.3.0, all of them do not respond when I touch them use electromagnetic pen.

Then I moved them into QT5 5.2.1 runtime folder, and them worked. I can use electromagnetic pen to control them.

I don't know what I making mistake.