[Qt-qml] Semi-transparent applications

[Elliot Smith]

I am trying to figure out if there is a way to create a semi-transparent
main application window in a QML application.

I've tried setting the color property on my main rectangle like this:

Rectangle {
  id: window
  width: 800
  height: 600
  color: "transparent"
}

and also tried "#00000000", but both come up as a solid white block when
run under the qmlviewer.

I've also tried the -opengl and -frameless flags to qmlviewer in
desperation, but I guess these won't make any difference (I thought
maybe the white background was from some default window or maybe because
I'm not using OpenGL, but I was clutching at straws).

Do I need to create a QtDeclarativeView of my own and run the QML app
inside that to get a semi-transparent application?

For reference, I'm using an Intel graphics chipset and running Fedora 13
with Qt Creator 2.0.1 and Qt 4.7.0 (MeeGo variants, which are fairly
standard AFAIK).

Thanks.
Elliot
-- 
Elliot Smith
Intel Open Source Technology Centre

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