How to set Display Canvas transparent?

[GeoMaster]

Hallo,

I wonder how I can set the org.lwjgl.Display´s canvas transparent. I can only set a background color (RGB) or a background image for the main window. I´ve tried a couple of things to avoid lwjgl to clear the canvas and draw a complete background but I was not able to avert it.

Does a solution exist for my need?

Thank you
Tobias

[Chuck]

Window transparency is something the window manager does, and isn't something you can easily control from the application.  I don't think lwjgl directly supports transparent windows at all.

[broumbroum]

perhaps the directx ( http://lwjgl.org/forum/index.php/board,14.0.html ) implementation of lwjgl would solve you're problem if your on windows : http://cboard.cprogramming.com/windows-programming/98875-transparent-window-without-using-layers.html
JDK 7 also provides native window translucency, but opengl doesn t seem to.

(EDIT : links)
(EDIT 2 : so far no news from a d3d rendering on lwjgl...)

[kappa]

As it stands LWJGL's native Display window doesn't support transparency. It is possible these days to create a transparent window pretty easily and draw OpenGL, especially with Aero, Compiz, etc around. Not sure how useful a feature it would be though and if it would be worth the effort. However anyone willing to give it a go should feel free to create a patch.

[jediTofu]

Right before your app displays a window, take a screenshot.  Then use it as you background 
This would at least work for fullscreen apps...