why cant i see wmplayer video through overlays

[Guest]

Hi,

I have an application window with opacity 25%. I can see through all
background application windows. But when i set it over the Windows media
player playing a video, the part of the wmplayer goes blank. May i know the
technical reason behind this???

vinod

 

[Peter Oliphant]

I've noticed this behavior with screen captures. A screen capture will often
have a black rectangle where a video is playing.

If I had to guess, video probably requires a more direct method of
displaying than do the other components (e.g., forms, icons, etc.). Thus, it
might be drawing directly to the screen, whereas screen captures and
transparency generators might write and then read some intermediate buffer
(i.e., single and/or double buffering) where the stuff drawn to screen is
placed, except the video isn't there due to the direct nature I described
above.

To restate, this is only a guess,. I have no idea if I'm correct... : )

[==P==]

 

[Chris Dunaway]

I see similar behavior on my dual monitor setup. If I have a video
playing on one monitor and then fire up a DirectX game, for example,
the video suddenly turns black. I suspect your are right.