| Problems with PICKFILE.PRO under IDL ver. 4.0.1a for VMS [message #6077] |
Sat, 30 March 1996 00:00 |
austin
Messages: 5
Registered: February 1996
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Junior Member |
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Hi Everyone,
I have discovered what I think is a bug in either the IDL xmanager or
more likely the procedure PICKFILE.PRO for IDL version 4.0.1a (VMS).
I am very interested to find out whether or not anyone else has
encountered similar problems. I will outline my problem in detail below
but first let me give a couple of code fragments illustrating the
situation. These code fragments come from the event loop of a
widget which I wrote.
This code works fine,
; a=pickfile()
name = 'userdisk1:[austin.data]stff1.dmp'
name2 = name
get_bm1pm0_data, file_type, name2, foo
but this code does not work,
a=pickfile()
name = 'userdisk1:[austin.data]stff1.dmp'
name2 = name
get_bm1pm0_data, file_type, name2, foo
My procedure get_bm1pm0_data.pro is a data extraction routine which
utillizes a shared image fortran library. I have traced down to the call_external
to the fortran code and found that the parameters passed are identical.
Furthermore, a colleague tested my code on his machine running IDL ver. 4.0
and everything worked fine.
I have come to the conclusion that there must be some conflict between
the xmanager and my shared image lib. So, I wrote another routine to simply
allow the user to input a string via a text widget. This is where things got
interesting.
This works,
a=pickfile()
get_file_name, name
name2 = a
get_bm1pm0_data, file_type, name2, foo
but this does not
a=pickfile()
; get_file_name, name
name2 = a
get_bm1pm0_data, file_type, name2, foo
It seems as though the xmanager is not properly "unregistering" pickfile.pro,
since when I call another widget right after the call to pickfile() it seems to
reset whatever is causing my problem.
I would really appreciate any insight you my be able to provide.
Thanks,
Brett
=======================================
J. Brett Austin (austin@unhedi1.sr.unh.edu)
Experimental Space Physics Laboratory
University of New Hampshire
Durham, NH
=======================================
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