How to make a transparent window with Qt Quick?

Question

Is there a way to make the window of a qml application transparent?

I\'m looking for a detailed description on how to draw simple s

Answer 1

I'm using Qt 5.3 with both C++ and QML and found that I needed to call QQuickWindow::setDefaultAlphaBuffer. This has to be done before creating the first QQuickWindow, so in C++, not QML. The window color and flags could probably be set in QML, but I opted to put all the code for winow transparency in one place like so:

QQuickView view;
QQuickWindow::setDefaultAlphaBuffer(true);
view.setColor(Qt::transparent);
view.setFlags(m_View.flags() | 
              static_cast(Qt::WA_TranslucentBackground));