a few thoughts re: Xarshi's issues with this:
1) make sure your video drivers are current
3) disable visual themes
3) question @Xarshi: what are your desktop settings?
4) set "Windows Color & Appearance" to Basic (vs Aero), if available. see screenshot:
i have Vista Home Premium 64 so whatever the comparable settings are for Win7 should be used.
i know when i run some apps (cs2 illustrator, for example) it automatically sets appearance to Basic (from my normal Aero setting) presumably to avoid graphic issues (it then reverts to Aero when i close the apps). adobe stuff automatically does this; if this ends up being the issue on some machines, there's gotta be a way to check and set (and reset) this from inside the app. itself so it's worth looking into and including for compatability's sake.
@billy777 - i don't know anything about darkvideo's functionality and requirements but it sounds like a "play animation to image" approach? if the
creation of the image is causing the issue, why not load a pre-made image instead of creating one at runtime (or grabbing an image at desktop resolution instead of creating one from a memblock)? i'm guessing you're creating one so it can be the same size as the user's desktop? for now, how about loading an image (say a standard 800x600) and playing to that for testing purposes. (ie, a quick darkvideo demo that Xarshi can try). really, this all might be a darkvideo issue and something THEY need to explore, but, in the meantime, you could help track it down.
anyway, maybe this will be helpful
Virtual Nomad @ California, USA
AMD Phenomâ„¢ X4 9750 Quad-Core @ 2.4 GHz . 8 GB PC2-6400 RAM
ATI Radeon HD 3650 @ 512 MB . Vista Home Premium 64 Bit