Apps built against an evaluation version of Qt show a Nagging Pop-Up. Evaluation Qt Creator shows one Nagging Pop-Up at the beginning, and then one for each switch to Qt Quick Designer:

The reason for that is that QtQuick Designer each time launches the so-called qmlpuppet. qmlpuppet shows the Nagging Pop-Up.

Possible solutions:

1. Remove nagging all-together: https://codereview.qt-project.org/#change,78739
2. Create a hidden parameter or secret environment variable in Qt to surpress the nag screen, and use that for qmlpuppet