[vtk-developers] window going blank...

[clinton at elemtech.com]

How about trying this?
http://msdn.microsoft.com/en-us/library/ms648415(VS.85).aspx

Clint

On Friday 26 September 2008 3:02:39 pm Lisa Avila wrote:
> I have a nice brand new desktop with 64 bit Vista. An issue that has
> been a minor problem for years is now more of a major problem. Here is
> the basic concept:
>
> set up a pipeline to view the first image in an animation series
>
> while ( !done )
>   {
>   change the reader input to the next image
>   renWin->Render();
>   }
>
> Previously on my 32bit XP system this worked for a while (where "a
> while" was something on the order of a minute). After that the window
> would just go to white or black, and would return only after the
> animation was done. Now on my 64 bit Vista machine, "a while" has become
> much shorter (sometimes just a second or two). In either case, if you
> cause another window to be active, or anything else pops up on the
> screen (like those little alert bubbles that pop up from the bottom bar)
> then you immediately lose the image. Perhaps the difference is that more
> of that is now happening in Vista and that is why I often only get a
> second or two of rendering before losing the image (although
> occasionally I will get 10 seconds or more...)
>
> Is there a way to fix this? It should be valid to render in a loop and
> expect to see the results indefinitely, right? Or is that just not
> possible any more from raw C++ on Windows?
>
> Sebastien sent me a link to
> http://www.opengl.org/pipeline/article/vol003_7/ which has some of the
> pitfalls that might cause this - but I can't see anything we are doing
> in my simple example that would case this (there is no intermixed GDI
> which I think we only use for some instances of off screen rendering, we
> do return TRUE for WM_ERASEBKGRND, etc.)
>
> Any ideas?
>
> Lisa
>
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