Do Qt Functions Use Win API Behind the Scenes?

[Crag_Hack]

Hi I have a quick question - do Qt functions like QDialog or QFile/QDir use the Win API to do their work behind the scenes when developing for Windows? I'm partly curious but also it bears relevance to my backup program... Thanks! :)

[Christian Ehrlicher]

For sure do they use WinAPI. Since Qt is OpenSource you can take a look at the sources, e.g. http://code.qt.io/cgit/qt/qtbase.git/tree/src/corelib/io/qfilesystemengine_win.cpp

[Crag_Hack]

Thanks Christian. Will check out.