Classic controls dissapearing in LabVIEW 6.0.1

[Tom WP]

Hi i am using LabVIEW 6.0.2 on a laptop with winME (not my choice) and a geForce2 Go graphics card. For backward compatibility i have used labVIEW 5.0 LED indicators on the front panel of one of my application. These indicators are dissapearing.

This is a very strange bug. The longer i run the application the more of my indicators dissapear until i eventually have none. My application then looks very blank and pretty useless. Can anyone help or has anyone heard of this before?

Cheers.

[pawel]

Hi Tom
I had the same problem. There are two ways of doind this. One was proposed by Shodan, and one I get by myslef.
I would give you the link to this posts but I do not know how :), therfore I enclose the discussion.
regards
Pawel

Shodan on 5/14/2002 answered:
"Hi,

I had the same problem. I could manage a workaround !
Goto to the Tools Menue and select Options.
Select at the topmost Pulldown-Menu "Frontpanel"
and disable the first point (it should be smoothing graphics or so ,
I cant tell you excactly cause I use the german version).
If you can find a better way please tell me!


P.S.: A Reinstallation didnt worked


cu"

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Pawel Pocwiardowski on 5/15/2002 commented
:
"Hi
Thanks for this, it sounds better than my solution with
decreasing the maximum color depth :).

regards
PP

[Greg_McKaskle2]

> Hi i am using LabVIEW 6.0.2 on a laptop with winME (not my choice) and
> a geForce2 Go graphics card. For backward compatibility i have used
> labVIEW 5.0 LED indicators on the front panel of one of my
> application. These indicators are dissapearing.
>
> This is a very strange bug. The longer i run the application the more
> of my indicators dissapear until i eventually have none. My
> application then looks very blank and pretty useless. Can anyone help
> or has anyone heard of this before?
>


This indicates that your computer is running out of GDI resources. This
is one of the major problems with these non-NT based OSes, they have
limited amounts of these resources, so a bug in a video driver has a
small leak, and 50K later, your computer is acting funny.

To verify this, check your GDI or graphics resources. I have never used
ME, but there is usually some way of finding this as a percentage. You
will probably see that it starts somewhere around 20%, you start LV and
other apps up and it climbs to 50 or 60%. As you run your apps the
number continues to climb slowly and when it reaches 85 or 90%, funny
things start happening with the graphics. Things are just missing.
Eventually you might see crashes of the OS or apps or a blue screen.

One short term workaround is just to reboot occasionally before you lose
any work. If you find a more recent version of the video driver for
your video card, that usually fixes it. Another option is to ask again
about using Win2000 or WinXP. They come with newer video drivers that
are simpler for the card makers to write, therefore they tend to have
fewer bugs. They also do not have the 64K limits on these resources, so
a leak may only affect you after several months rather than several
times a day.

Another thing to try, but this is a bit of a longshot is to change
screen depth. That sometimes changes enough about the video driver that
the problem will either get better or get worse.

Finally, if you are doing lots of printouts, I think I remember a bug in
LV where standard printing leaked something like a font or a region
under certain circumstances. In that case, it is LV's fault and you
should contact NI support. One workaround for that is to not use
standard printing, but in Tools Options switch to using Postscript or
bitmap. There is also a later version of LV though.

Hope this helps.
Greg McKaskle