Hi Martin, I replied to your message earlier, but I thought I would post my experience here for the benefits of those reading this thread down the line:
What I did was create a WinForms Control that hosts the OSG window. Look for examples (theres a good one on CodeProject I think) of integrating WPF and OpenGL. OSG will be the same. This is necessary because WPF uses HWNDs only for the top-level window - everything below is DirectX. But a WinForms control has an HWND, and WPF has an interoperability feature where it can host WinForms controls. There are limitations however - principally that transparent WPF popup windows (used for messages, menus, etc) do not show up properly over the OSG window under XP on most NVIDIA graphics cards (non-Quadro cards), according to NVIDIA. One possible workaround would be to have OSG render to a texture and then blit that to a WPF canvas. I have been intending to do this - but have not gotten around to it yet. Currently I just structured my menus to avoid the overlap. I should also mention that it is useful to crank up the OSG render loop during the initialization of the control - not at construction, IIRC. There are a few other hurdles, like having to use the dispatcher to update WPF UI widgets, when the update originates from OSG - but these type of threading issues are to be expected in this type of app anyway. A lot of my daily pain comes from having to drill a piece of information down through several layers of code (abstraction layers for threading and for the managed/native transition) to get from the UI to the OSG render loop, which is again, to be expected. I have found a couple of issues with events, such as WPF not passing drag events (that originated from outside the app) down to OSG - which I dealt with by handling the events at the WinForms level, and then drilling down the mouse drag info to my OSG render loop. Best of luck, Brian ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=15651#15651 _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
