qt creator compilation error with instruction <QtQuickWidgets/QQuickWidget>

  • Good morning.
    Unfortunately I do not speak English, sorry (I translated this message with the google translator).
    In a trivial mainwindow.h generated automatically with qt creator, as soon as I insert the #include <QtQuickWidgets/QQuickWidget> statement, the compilation crashes with the following messages. How can I fix it? Thank you.
    0_1499322369020_Schermata del 2017-07-06 08-14-26.png

  • Moderators

    add QT += quickwidgets to your .pro file.
    Don't forget to rerun qmake.

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