form 'freezes'

[Erivis]

Hi all,

During a timeconsuming action I like to present a form with a progressbar,
so the user knows someting is going on.
My problem now is that if an user set focus on the form, the caption bar
says: 'xxx does not respond' and the progressbar freezes. The process
however continues without problems.
This must be something trivial, but I cannot find anything that solves this.
Any suggestions?

tia,

Erik

 

[Erivis]

Found it. Application.DoEvents() did the trick
Erik

 

[Erivis]

Hi Bjørn,
Thanks for your suggestion.

Erik

Erivis skrev:
Classical error: You perform the heavy job the main thread, which means
that the form is blocked until the heavy job is complete.

Move it to another thread which reports the progress back to the main
thread.

 

[Jeff Johnson]

Thanks for your suggestion.

For reference, it's not just a suggestion; it's the absolute best solution
to the problem.

 

[Arne Vajhøj]

Found it. Application.DoEvents() did the trick

Try and see how many hits Google gives on:

application doevents evil

Arne

 

[Arne Vajhøj]

During a timeconsuming action I like to present a form with a
progressbar, so the user knows someting is going on.
My problem now is that if an user set focus on the form, the caption bar
says: 'xxx does not respond' and the progressbar freezes. The process
however continues without problems.
This must be something trivial, but I cannot find anything that solves
this. Any suggestions?

Just start a new thread to do the work and update the progress bar
via invoke.

Arne

 

[Erivis]

Arne

Try and see how many hits Google gives on

you must refer to this:
Q: DoEvents is evil?

A: Glenn (Microsoft) Yielding on the UI thread is a legitimate Windows
programming practice. It always has been. DoEvents makes it easy, because
the situations in which you need to use it are simple

<g>

Erik

 

[Arne Vajhøj]

you must refer to this:
Q: DoEvents is evil?

A: Glenn (Microsoft) Yielding on the UI thread is a legitimate Windows
programming practice. It always has been. DoEvents makes it easy,
because the situations in which you need to use it are simple

<g>

That extract is not the typical opinion on the topic.

Arne