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forum.gifForum - iziBasic - Sujet n°1042

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actif  Sujet n° 1042  Create file headers?

le 09/01/2005 @ 14:51
par Peter Thorstenson

Anonyme



Is it possible to create JFile and Pilot-DB databases or is it only possible to add, delete, and modify the records in them?
I ask becase I see they have a header called "Appinf" when I "view" them with Resco Explorer. Doc files created with QED also have an "Appinf" header, while doc files created with Zdocj and SiEd doesn't have any.

/Peter
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Réponse n° 1
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le 09/01/2005 @ 17:46
par aldweb

Anonyme

visiteur
Hello Peter,

I never used Resco Explorer and I don't know what this "Appinf" is, "Appinf" which I never met with any other resources editing tool or explorer-like software.
What is its content?

If you know how the databases of JFile and Pilot-DB are internally built, meaning you know their structure, then you may very well build and edit them, as well as their records, with an iziBasic program.

This is what I did for the ToDos sample program shipped with iziBasic, knowing the structure of the DB the of To Do software provided by Palm OS.
Same principle with the other sample application so called MemoTitles.

And, here is a sample piece of code, that I sent to one user today for writing something to the MemoDB of the Memo Pad application:
{SECUREFILES OFF}
BEGIN
J=1
FOR I=1 TO 10
A$­­=STR$­­(I,2)+CHR$­­(10)
PUTSTRING$­­$­­ A$­­,J
J=J+LEN(A$­­)
NEXT I
OPEN "MemoDB" FOR APPEND AS #1
PRINT$­­$­­ #1
CLOSE #1
END


Cheers

@+
aldweb
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Réponse n° 2
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le 09/01/2005 @ 19:24
par Peter Thorstenson

Anonyme

visiteur
"Appinf" is the first record, som kind of header record which contains info about what there is in the rest of the records--field names and so on.
I think you answered my question, though.

Thanks for your attention! :)
/Peter
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