first, dependency walker
http://www.dependencywalker.com/second platform
http://stackoverflow.com/questions/16198649/how-to-run-qt-5-applications-on-other-computers-windows-7just add the fileqt.conf
to your app dir with the following content[Paths] Libraries=./platforms
then copy, to same app dir, the subdir "platforms" that you will find into dir C:\Qt\Qt5.1.1\Tools\QtCreator\binThat's all.