Pan Troglodytes wrote:

> Can some other folks here do a test and see if you can reproduce this on 
> your machine?  Remember, big windows are key.  I found if I dragged a 
> very small window around, I never got it.

I've run into very similar issues on a somewhat similarly configured 
machine (dual monitors, 1200x1600 each in portrait orientation) with 
various Flash players for years--from Flash Player 7 through Flash Player 9.

In particular, this seems to particularly evident in movies with 
relatively large pixel dimensions (my largest are 1200x1600--yes, full 
screen on one of the monitors) and movies running under significant load 
(e.g. doing seconds-long heavy lifting in ActionScript that causes the 
rendering cycle to slow down significantly).

I can also concur that I've never seen this with movies of relatively 
small dimensions, say the default 550x400 pixels, although most of mine 
that are that size tend to be fairly simple tests whereas my large 
movies tend to be rather complex with occasional periods of "heavy 
lifting" as mentioned above (hundreds of classes, 500KB+ SWFs).

I see the exact same effect--rectangularly aligned portions of the Flash 
movie's window go "blank" to some background color when another window 
is being dragged across them.  However, if another window is slowly 
dragged over the misdrawn areas again , the Flash Player will usually 
redraw correctly once again.  For the most part, I've just ignored it as 
for me, it's been only a development issue as the target applications 
using the affected SWFs are deployed as wrappered executables that run 
in full-screen mode where these draw problems aren't an issue.

I almost never use Internet Explorer outside of accessing the Windows 
Update site, so I don't recall having tested or seen this effect under 
Internet Explorer.

My configuration:
Firefox 1.5.0.4
Windows XP Professional SP2 (patched up-to-date)
NVidia GeForce 6800
Intel Pentium 4 HT 2.80GHz

Jim


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