[Shapelib] Shapelib Digest, Vol 47, Issue 4

vdp09 vdp09 at Hotmail.com
Mon Mar 30 16:49:25 PDT 2009


Hi There,

Were able to figure out this problem? I am having the same problem

Thanks,

Vikas



Barry Kronenfeld wrote:
> 
> Tom,
> 
> You're right, I did change to a newer computer which has 64-bit
> architecture...  How would this cause a problem?
> 
> Barry
> 
>> Barry, did you only change the operation system or did you also 
>> change 
>> the underlying hardware from 32 bit to 64 bit architecture? Maybe 
>> this 
>> could be an issue?
>> 
>> Regards,
>> Tom
>> 
>> Barry Kronenfeld schrieb:
>> > I think I have had the same problem as Ian.  I used ShapeLib in 
>> VB 6.0 for years using Windows XP without any problems.  Recently 
>> I "upgraded" to Windows Vista and since then I've also encountered 
>> a fatal error whenever I tried to invoke the 
>> DBFReadStringAttribute function.   I don't program in C so I don't 
>> know what is going on underneath, but I suspect it is the same.
>> >
>> > - Barry
>> > ______________
>> >  
>> > Barry Kronenfeld
>> > Assistant Professor
>> > Department of Geography
>> > George Mason University
>> > bkronenf at gmu.edu
>> >
>> >   
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>> >> Today's Topics:
>> >>
>> >>   1. Re: DBFReadStringAttribute broken? (Ian Wright)
>> >>
>> >>
>> >> ----------------------------------------------------------------
>> ---
>> >> ---
>> >>
>> >> Message: 1
>> >> Date: Thu, 20 Mar 2008 16:05:15 +0000
>> >> From: Ian Wright <ianw at graticule.com>
>> >> Subject: Re: [Shapelib] DBFReadStringAttribute broken?
>> >> To: Shapelib Development <shapelib at lists.maptools.org>
>> >> Message-ID: <47E28B3B.3050809 at graticule.com>
>> >> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>> >>
>> >> Frank,
>> >>
>> >> Thanks for the reply. I have actually downloaded and tested 
>> that 
>> >> version 
>> >> now and the same problem
>> >> arises when using the lib/dll. I used the makefile to generate 
>> >> these and 
>> >> then tried replacing the ones that
>> >> I was currently using, and it has exactly the same problem.
>> >>
>> >> So I tried including just the shapefil.h and dbfopen.c files as 
>> >> they 
>> >> were the only functions that I was
>> >> interested in within the project and thought stepping into 
>> these 
>> >> functions would help identify the
>> >> problem, however it ran fine right to the end. I've tried it a 
>> >> couple of 
>> >> times and as yet haven't had
>> >> the same problem or any corruption of variables whatsoever when 
>> >> running 
>> >> it just from those source
>> >> files.
>> >>
>> >> I'm not sure exactly what that suggests. Now that I've got it 
>> >> working in 
>> >> windows also I'm planning
>> >> not to use the DLL etc. and stick with what works for now, so 
>> I'm 
>> >> guessing if there haven't been
>> >> any other reported problems then it may not be worth worrying 
>> about?>>
>> >> If you do want to investigate further and theres anything I can 
>> be 
>> >> assistance of then let me know.
>> >>
>> >> Ian
>> >>     
>> >>> Ian,
>> >>>
>> >>> I don't see why this is happening.  I would however suggest 
>> you 
>> >>>       
>> >> update 
>> >>     
>> >>> to the
>> >>> current shapelib code.  There is code that is likely more 
>> recent in:
>> >>>
>> >>>   http://download.osgeo.org/shapelib/shapelib_1_2_10.zip
>> >>>
>> >>> However, I have also taken the liberty of packaging the latest 
>> >>> development
>> >>> code and posting it as:
>> >>>
>> >>>   http://download.osgeo.org/shapelib/shapelib-1.3.0a1.zip
>> >>>
>> >>> Try with updated code and see if the problem persists.   If it 
>> >>>       
>> >> does, 
>> >>     
>> >>> then you
>> >>> should learn to use your debugger, build the dbfopen.c code 
>> with 
>> >>> debug, and
>> >>> step through the time "i" becomes corrupted to see what is 
>> going on.
>> >>>
>> >>> Best regards,
>> >>>       
>> >> -- 
>> >> *Ian Wright*
>> >> /Software Developer
>> >> ianw at graticule.com /
>> >>
>> >> * Graticule <http://www.graticule.com>
>> >> * 01132 344000
>> >>
>> >>
>> >>
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>> >>
>> >> End of Shapelib Digest, Vol 47, Issue 3
>> >> ***************************************
>> >>
>> >>     
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>> End of Shapelib Digest, Vol 47, Issue 4
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