Hello sir:

I am Programming UVC avstream driver for months, but I met one
problem,that is : in XP system, I used the WIA to snapshot the
still image,the Wia will pop a message "the camera is processing
your request",in the same time I could see the debug message of
my driver's Snapshot routine appeared in DebugView window, the
message seemed it was normal (because in the same condition,
that I used the Graphedit and AMCap can get the Still Image),but
the Wia couldn't get the Still Image,by the way,the preview
function is normal. On the other hand, I tested my driver
in Vista using Graphedit and AMCap to get still image were normal
as in XP.So, Where am I missing the key point?
Wish you can help me, please.

parkerlived