Deploying an application using QtQuick controls

[comgate3]

Hi. I think I've done lots of searches, but got nothing yet.

After reading documents and posts in Qt forum, I figured out 'QtQuick' and 'QtQuick.2', which my qml files require, are needed to be in a directory where the application executable file exists.

However, I want to put those two directories along with their files into somewhere else (such as ../qmlplugins).
I've tried to QQmlEngine->addImportPath(), qt.conf, QApplication::addLibraryPath() and such and such..but no success.

Does anyone know how? Please help