flickering subform

[Emilio]

Hi everyone, I'am a newbie
Something really annoying is happening to my form, one of
the subform keeps flickering, the only way to stop it is
running the mouse over it.

I tried "Refresh", "Recalc", but it doesn't work.

Does anyone know what causes this, and how to stop it.

Thanks in advance,
Emilio

One last thing, it only happens when there are many
items, say 5 or more

 

[Ken Snell]

Any code running in the main form that is requerying or repainting the
subform?

 

[Emilio]

Hi Ken,

Thanks for your response.

No, there is no code related to the subform.

Thanks anyway,
Emilio

 

[Ken Snell]

Any timer events running?

 

[Emilio]

Aha!

The clock was the problem.

Thanks a lot for your help

Emilio

 

[Emilio]

Hi Ken again,

No, it was a false alarm.
Something happened that seemed to solve the problem when
I deleted the clock and all the code and reseted the
timer to "0".
But I still have the problem.

Thanks,
Emilio

 

[Ken Snell]

Operating system ? If WinXP, are XP themes turned on?

 

[Dirk Goldgar]

Hi everyone, I'am a newbie
Something really annoying is happening to my form, one of
the subform keeps flickering, the only way to stop it is
running the mouse over it.

I tried "Refresh", "Recalc", but it doesn't work.

Does anyone know what causes this, and how to stop it.

Thanks in advance,
Emilio

One last thing, it only happens when there are many
items, say 5 or more

Is Conditional Formatting being used?

 

[Emilio]

Hi Dirk,
Thanks for your reply.

Yes, I am going to try without it.

Thanks again,
Emilio

 

[Emilio]

Yes Ken, I am going to try turninng it off

Thanks again,
Emilio

 

[Emilio]

That is it!

The conditional was the problem, I tested and retested to
be sure.

Tha strange thing is that the database is 3 years old and
it has been that way since then, without this problem.

I would hate to live without conditional in that subform,
is it there anything that I can do to aliviate the
problem and continuing using it?

Thanks for any help.

Emilio

 

[Neil]

Emilio,

Could you give an example of what you are doing when applying the
conditional formatting rule(s). Someone may be able to give you an
alternative of getting the same results?

Neil.

 

[Dirk Goldgar]

That is it!

The conditional was the problem, I tested and retested to
be sure.

I've seen this before, but I don't have an easy solution for you.

Tha strange thing is that the database is 3 years old and
it has been that way since then, without this problem.

I would hate to live without conditional in that subform,
is it there anything that I can do to aliviate the
problem and continuing using it?

What has changed since the time when you didn't have this problem?
Operating system, display driver, display settings, XP Themes,
recordsource query, table indexing, Timer event, volume of data ... ?
Those would all be things to look at. If you're running WinXP, I'd
especially try it with XP Themes turned off, because that's been
associated with some display-driver bugs.

Conditional formatting on a form, especially a continuous form, requires
an tight internal timing loop that continually passes through the values
on display and decides how the controls must be repainted. Anything
that slows down or interferes with that loop could cause the flickering.
One thing I've seen do this is the need to evaluate a user-defined
function for each record.