[Qt-qml] problem: how to open magnifier inTextArea when adjust selection text?

[张文生]

Hi Guys:
    I have a problem can not been sloved by myself,I use meego component's TextArea in my project,
the Magnifier can be activiated when placeandhold some time,but in some other applications,i found
the magnifier can be opened when adjust selection,how?
    Any help is appreciated. THX
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