Re: RPG400 SDA query?

[Mark Lazarus <mlazarus@xxxxxxxx>]

John, Tim,
>
>RE:    RPG400 SDA query?
>
>>Hi all,
>>I am building a AS400 SDA screen and on this screen I am going to have
>>an array (6 elements / 30 characters each) displayed.  Well wanting to
>>take advantage of the EXFMT opcode to write my screen, I am not able to
>>give any of my SDA screen fields names like this -- QN,1 or QN,2.. I
>>have a hard time believing that I must still do a MOVE of the array
>>elements into the hard named screen names like this:
>>MOVE  QN,1   QN001
>>MOVE  QN,2   QN002
>>Etc....
>>Any suggestions to this former S36'er appreciated.
>>: Tim & Dana Truax :
>
>
>
>Tim 
>I'm glad you asked that.   In RPG III we used to just make a D/S
>and hard code the From & To positions of each field (QN001,QN002,etc) 
>and then "Overlayed" the data structure with an array defined something 
>like this;
>
>
>E             ARRAY    3    3
>I*
>I    DS    
>I       1   3 QN001
>I       4   6 QN002
>I       7   9 QN003
>I       1   9 ARRAY  
>
>With this definition,  you can manipulate it as a field, structure, 
>Array, or Array elements.
>
>In RPGIV  we would.... LIKE TO DO THIS!!!!!!!!!.
>
>D STRUC     DS
>D                   QN001
>D                   QN002
>D                   QN003
>D                3  ARRAY        DIM(3) OVERLAY(STRUC)
>
>But they have not given us the ability to overlay at the D/S level yet.
>sooooo, in this example you would have to define the array like this;
>
>D          1    9    ARRAY       DIM(3)
>
>Hard coding(Jon, Hans, George)  the from & To of the array definition.  
>
>ooooooooooooooooooooooooorrrrrrrrrrrrrrr.
>
>Use pointers & based variables.

 How about renaming the screen variable directly into the array?

        I       QN001                   QN,01
        I       QN002                   QN,02 ...

 -mark

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