[osg-users] Transparent Window Application for Windows and more OS

[Christian Schulte]

Hello everyone, I'm currently integrating in osgViewer the transparency an I'm looking for some advices. I started with the code published by Chris Hidden on the mailing list, and modified it a little bit in order to be able to choose between color transparency (LWA_COLORKEY), or alpha transparency (LWA_ALPHA) or both. The probleme is that it is, for the moment, done during the window creation. What I wanted is to be able to adapt the LWA_COLORKEY whenever the user wants, same for LWA_ALPHA. My questions to the community : Where would be the right place to make these changes (as I need to be able to recover the window handle) ? Do you think that it could be interesting to be able to switch from transparent to non transparent during execution ? Should the color, alpha and activation boolean be added to the traits and be modified through GraphicsWindow class ? Has someone already implemented the transparency for another OS / Windowing System, and if yes could we try to unify the way it is done ? Sorry for all these questions, but as it is my first contribution try, I want to be sure to make no mistake ! Cheers, Christian -- SCHULTE Christian Ingénieur Recherche Responsable du Laboratoire de Simulation ONERA - DCSD/PSEV Département Commande des Systèmes et Dynamique du Vol ONERA - Centre de Salon de Provence BA 701 13661 SALON AIR Cedex - France Tel :04.90.17.01.45

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