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Hello, Marc!
>> So, I spent another couple of days reading MSDN and BlackBox
>> sources and, hopefully, fixed it once and for all.
MM> Thanks for taking time to look at this problem, Alexander! I was
MM> one of the people to initally report this problem, and I observed
MM> this problem much more than you seem to -- for me, this was not
MM> an isolated problem, but one that happened all the time.
I just can't live with that kind of annoyance unfixed. The program's
interface just seems so immature with that kind of bugs.
MM> Your initial fix seemed to fix my problems quite well. However,
MM> this new fix slows my programs down so much that I have
MM> reverted back to the original fix.
MM> As an example, I have a rocket trajectory simulation code which
MM> evaluates the equations of motion while drawing the trajectory
MM> on the screen. As a test case, I used this code with the standard
MM> release of Blackbox, and the time it takes to do this is about 1
MM> second. With your initial fix, this also takes about 1 second.
MM> With your new fix, this now takes 28 seconds -- quite an
MM> unnacceptable slowdown!
It sure is. Could we work on that together?
If you do have some time to invest in this, I'd like you to install
the patch again and then edit Priv/Mod/HostWindows.CloseBuffer. Just
click the fold in there to uncomment the line with call to
ValidateRect. Recompile, restart BlackBox, check for slowdown and
write the result here.
If the slowdown is no more, then perhaps your program should not
force screen repaints after every added point? : ) Try updating
screen not more often than once in 100 or 500 msec.
If you don't have that much spare time, maybe you could send me an
example program that would reproduce the slowdown, so I could fiddle
it on my own?
MM> So I'll continue using the original fix, as it is both efficient and
MM> seems to solve the problem.
It seems, but it doesn't : (
---=====---
Alexander
--- BlackBox
--- send subject HELP or UNSUBSCRIBE to blackbox{([at]})nowhere.xy
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Received on Tue Sep 05 2006 - 21:43:12 UTC