CU Amiga Super CD-ROM 17/CU Amiga Magazine's Super CD-ROM 17 (1997)(EMAP Images)(GB)[!][issue 1997-12].iso/CUCD/Programming/AMOSList/AMOSLIST.0997/[e-mail]_Sat Sep 27 14:46:06 1997.msg

Text File | 1997-10-01 | 4KB | 94 lines

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From: Mush <[e-mail]>
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To: "Mr. Giark To You" <[e-mail]>
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Date: Sat, 27 Sep 1997 12:50:35 +0500
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X-Mailer: YAM 1.3.4 [020] - Amiga Mailer by Marcel Beck
Organization: Mushroom PD - AMOS Public Domain Library
Subject: Re: Help
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The man most directly responsible for this twaddle was Mr. Giark To You, who
did thus comment on Help on the night of 27-Sep-97:
-> Once you have a listview array going, how do you delete items from it? The
gui
-> set command looks like the one, but how does it owrk? Pietro's docs suck.

OK, i'll reply back to the list with this one also, as its quite an
interesting
subject to work from.

The GUI Extension (as we know) has an excellent function of being able to
display a rather good set of listviews, all completely independant of
themselves. One of the features which wasnt covered with the above extension,
was removing Items from it.

The removal process is really quite simple, you must simply remove the item
from
the array in which you are mirroring, and move the next item down up to where
the old one is, otherwise it will mess up the variables of the listview, for
example, my array could be :

   1
   2
   3
   4
   5

And I want to remove line 3, so I would make the position in the array null,
and
move everything up, so the array would look like:

   1
   2
   4
   5

Also remember, that the array MUST start at position 0 in the listview, and if
you leve a blank line in between lines, even though you are clicking on them
in
the listview, it skips blanks when drawing, and doesnt incrememnt its position
in the array, so if the first 3 lines were blank, followed by some text, then
the first line in the listview would be the first line of text, and clicking
on
it, using GUI READ to get where in the listview it is, would return 0 as your
hitting the first item on display.

Using the above method is OK, but you must proceed to re-display the listview
in
order for it to be displayed on the screen correctly.

If anyone has anymore questions about the GUI extension, please feel free to
ask
me about them.

Andrew "Mushroom" Kellett
--
 Email: Andy Kellett <[e-mail]>  Team *AMOS* + IAPA Team *AMIGA*
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