[DUG] ListView - Scroll Event

[Eric A]

My principal reason for choosing the ListView was that I needed 
something akin to the DBGrid to display at least 4 columns (the  data 
comes from the properties of the object (which is the ListView "Item"). 
 I considered the TreeView and whilst there would only be about 4 
levels, there can be a lot of child items for each top level item.  
Using Master-Detail views seemed to me more sensible in terms of 
navigating through the Master objects  - there would be a lot of 
scrolling through the tree otherwise.

A database approach would 
have been really easy in terms of Master-Detail display grids.  
Unfortunately, however, using a database isn't straightforward as the 
program configuration data I'm reading has "Elements", each of which can
 have a list of references to one or more other "Elements", i.e. 
circular references (don't bite me, I didn't write the other program = 
jOrgan).

If I had an understanding of emulating a dataset then I 
could use the DataSource and DBGrid components and life would be 
simple.  I suspect, though, that its not a trivial exercise.

Yes,
 TListView is a pain to use in comparison with the visual TString 
ancestors.  Its actually a bit oddball in many respects, so I will take a
 look at the StringGrid as an alternative.

From: johnkbird at paradise.net.nz
To: delphi at listserver.123.net.nz
Date: Mon, 28 Jul 2014 11:38:18 +1200
Subject: Re: [DUG] ListView - Scroll Event





I have not used Listviews – for displaying lists I 
have generally used grids, listboxes, or checklistboxes.  Out of curiosity 
what are the main advantages of Tlistview as it seems to have a couple of extra 
hurdles to use.   Or is it better to go the whole way and use 
something like Virtual Tree View (which I am not sure if is supported in Unicode 
Delphi).   Myself I have generally favoured driving stringgrids quite 
hard with quite a bit of code in the drawcell event which gives a lot of 
flexibility (I did a VCL stringgrid version of the Firemonkey periodic table 
with TList and Stringgrids that looks pretty cool with colours and multiple 
texts in each cell.).
 
The firemonkey controls allowing embedding of 
other controls in them look very promising as well (although I can hear comments 
starting up about scorched chimp even as I type this!)
 
Comments on merits of each (Listview and Virtual 
Tree View) and any references for further reading would be welcome.
 
This is apropos a larger topic – how to figure out 
which control to use for a particular purpose – something which the help does 
not really give much help on.

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