Qt - top level widget with keyboard and mouse event transparency?

Question

I want an app\'s main window to ignore mouse and keyboard events, passing them to applications underneath it in the window manager Z-order.

I see

Answer 1

I found the following solution (tested on Linux, also works on Windows according to @TheSHEEEP):

setWindowFlags(windowFlags() | Qt::WindowTransparentForInput);

It has been added in more recent qt release (i did not find when) see http://doc.qt.io/qt-5/qt.html