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From: cyosta@taux01.UUCP ( Yossie Silverman )
Newsgroups: comp.sys.mac.programmer
Subject: Re: Moving a Textedit field in a modal dialog
Message-ID: <2414@taux01.UUCP>
Date: 22 Aug 89 07:39:28 GMT
References: <15088@dartvax.Dartmouth.EDU> <21428@cup.portal.com> <58078@tut.cis.ohio-state.edu> <8356@hoptoad.uucp>
Reply-To: cyosta@taux01.UUCP ( Yossie Silverman )
Organization: National Semiconductor (IC) Ltd, Israel
Lines: 36

I had to do this once for a program that had a Dialog which served as a
small spread-sheet.  I used the List manager to put up the spreadsheet
display itself (grid and data) and a TE item for input into the active
cell.  The way I moved the TE item around was the following sequence:

HideDItem
GetDItem
SetDitem (to new location with 16384 added to the horizontal coordinates)
ShowDItem

The 16384 is the "magic" constant that Hide/ShowDitem use to move the
item rect offscreen.

A later version of the program had the Dialog modeless and yet a later
version got rid of the Dialog all together and used a Window and the 
TE manager directely.  This turned out to include just as much code and
was MUCH easier to maintain and read.

One interesting aspect was that I had TWO such small spreadsheets on a
single window.  There are some strange problems associated with using
the List Manager for this sort of thing, but nothing that can't be
solved (I.e. not bugs, just funny ways of doing it).

BTW, to all those that fear using the List Manager, especially in Dialogs,
there is NOTHING TO IT!  The List Manager has to be one of the simplest
and nicest Managers in the Mac.  The only problems I have have to do with
the LActivate procedure and the lack of means of getting it called for a
Modal Dialog (in case an Alert pops up above it).  This is an esthetic
problem, not a functional one.

- Yossie
-- 
Yossie Silverman                                   What did the Caspian sea?
National Semiconductor Ltd. (Israel)
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