Re: IDL 5.3.1 (Windows) backing store problem

[Michael W Asten <masten(at)mail.earth.monash.edu.au>]

Yes, it is a frequent problem on my Toshiba 2650 laptop (win98 OS; no idea
what graphics card is in the box).  It is as if the idlde gets 'tired' after
30-60 mins of use.  The problem always goes away if I exit idl and restart
idl.  I wont swear to it, but I think the problem also exists in idl5.4 (I
move between the two versions regularly).

Summary: sympathy and understanding, but no help .

Regards,
Michael Asten


"Jason P. Meyers" wrote:

> Hello,
>
>   I have been running into a problem with IDL not properly refreshing
> the log window after some period of time.  After about an hour or so of
> use, the log window in IDLDE refuses to update properly.  For example,
> the contents of the window aren't redrawn when re-exposed and sending
> any text to the window causes the window to go "blank".  Actually, it
> doesn't go blank in the sense that I see a white screen.  Rather, it
> blanks out to gray screen.  The text can be recovered by scrolling the
> window up and down at least one full window height.  But it then gets
> messed up as soon as the next bit of text is added or the display is
> moved.  The problem goes away if I exit IDL and restart.  (Note:
> resetting the session is not sufficient.)  I have tried running IDL with
> default settings of Retain = 1 and Retain = 2 and the problem persists
> under both settings.  Retain = 0 is not even an option because nothing
> gets updated at all.
>
>   Has anyone else experienced this behavior?  If so, is there a known
> fix (other than upgrading to version 5.4)?
>
> Thanks in advance,
> --
> Jason Meyers
> Ph.D. Student, Center for Imaging Science
> Rochester Institute of Technology
> jpm7934@rit.edu