Thanks Alastair and Ian,
I will look forward to 4.3 real version.
David
Ian MacLeod wrote:
> David (and other cross-platform GX Developers),
>
> Alastair is correct in all he says.
>
> I imagine that you want to read files created on a Sun, or write files to be
> read on a Sun, and you know exactly the data structure of the file. Under
> 4.2 GX Developer, you really need to write your own DLL to handle the
> reading/writing and/or byte swapping appropriate for the file at hand. The
> up-coming 4.3 will be able to read/write in any byte order by adding a
> qualifier to the file data type in the BF read/write functions (this was not
> implemented in the 4.3 Beta 1, but will be in the final release).
>
> As for the XDR stuff, as Alastair points out, this is used internally to
> allow us to serialize and read our own data objects in a neutral format
> (lots of jargon for non-object oriented types). You really do not need to
> be aware of this. However, this does bring up a common request that we
> receive, which is to document the physical file format of our class objects
> (maps, gdb files, etc.). These are object-oriented files that use
> serialization techniques like XDR, our own forward/backward compatible
> versioning model, structured file storage (etc. - more jargon). What this
> means is that we can and do change the physical file format to allow us to
> expand and evolve as your needs change (the addition of compression in 4.3
> for example).
>
> For all of our object files, you really need to use the GX API to open and
> use the contents of the files. This will insure that your GX's and programs
> can read past and future files as they change.
>
> Regards
> Ian
>
> _______________
> Geosoft Inc.
> Ian MacLeod
> [EMAIL PROTECTED]
> (416) 369 0111 x323
>
> Geosoft: Spatial Data Processing and Analysis Solutions
> http://www.geosoft.com
>
> _______________________________________________________
> More mailing list info http://www.geosoft.com/support/listserv/index.html
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* * David Triggs
World Geoscience Corporation
* 65 Brockway Rd
Floreat W.A. 6014
[EMAIL PROTECTED]
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