1. listview limit
- Posted by rml at rubis.trix.net
Jul 17, 2003
Hi all;
Is there a limit for the maximum number of caracters that listview can
handle in one line?
Thanks,
Rubens
2. Re: listview limit
On Wed, 16 Jul 2003 22:04:19 -0300 (07/17/03 11:04:19)
, <rml at rubis.trix.net> wrote:
>
>
> Hi all;
>
> Is there a limit for the maximum number of caracters that listview can
> handle in one line?
>
Yes, though its really a limit of 64K lines and not characters. To get
araound this limitation, you need to implement a virtual-list. There are
some examples of this somewhere, I just can't recall off hand. But
basically what happens is that your app is responsible for managing the
text lines, and when Windows needs a line of text, your app is asked to
supply a line.
--
cheers,
Derek Parnell
3. Re: listview limit
- Posted by rml at rubis.trix.net
Jul 17, 2003
Hi Derek;
I'm using listview to show selected frases, and frases bigger than 255 are
cut, this is why I asked.
I will do a search for virtual-list.
Thanks
Rubens
At 23:57 16/7/2003, you wrote:
>
>On Wed, 16 Jul 2003 22:04:19 -0300 (07/17/03 11:04:19)
>, <rml at rubis.trix.net> wrote:
>
>>
>>Hi all;
>>
>> Is there a limit for the maximum number of caracters that
>> listview can handle in one line?
>
>Yes, though its really a limit of 64K lines and not characters. To get
>araound this limitation, you need to implement a virtual-list. There are
>some examples of this somewhere, I just can't recall off hand. But
>basically what happens is that your app is responsible for managing the
>text lines, and when Windows needs a line of text, your app is asked to
>supply a line.
>
>--
>
>cheers,
>Derek Parnell
>
>
>
>TOPICA - Start your own email discussion group. FREE!
>
>
4. Re: listview limit
On Thu, 17 Jul 2003 00:34:33 -0300 (07/17/03 13:34:33)
, <rml at rubis.trix.net> wrote:
>
>
> Hi Derek;
>
> I'm using listview to show selected frases, and frases bigger than 255
> are cut, this is why I asked.
> I will do a search for virtual-list.
>
Sorry, but are you saying that the LENGTH of each line is being restricted
to 255 characters? Can you show me code that does this?
--
cheers,
Derek Parnell
5. Re: listview limit
- Posted by rml at rubis.trix.net
Jul 17, 2003
Hi Derek;
This is the code:
without type_check
include Win32Lib.ew
without warning
with trace
--with profile
--------------------------------------------------------------------------------------------------------------
constant Window1 = createEx( Window, "", 0, 0, 0, 0.999, 0.9, 0, 0 )
constant ListView1 = createEx( ListView,
{{"Count",100,0},{"Phrases",2000,0}},Window1,0, 0 ,0.99,
0.9,or_all({LVS_REPORT,LVS_SHOWSELALWAYS}),0)
sequence texto
object bla
setLVStyle(ListView1, {LVS_EX_CHECKBOXES,LVS_EX_FULLROWSELECT})
texto=repeat(123456789,30)
bla = addLVItem( ListView1, 0, {sprint(1),sprint(texto)})
WinMain( Window1,Normal )
At 04:08 17/7/2003, you wrote:
>
>On Thu, 17 Jul 2003 00:34:33 -0300 (07/17/03 13:34:33)
>, <rml at rubis.trix.net> wrote:
>
>>
>>Hi Derek;
>>
>>I'm using listview to show selected frases, and frases bigger than 255
>>are cut, this is why I asked.
>>I will do a search for virtual-list.
>
>Sorry, but are you saying that the LENGTH of each line is being restricted
>to 255 characters? Can you show me code that does this?
>
>--
>
>cheers,
>Derek Parnell
>
>
>
>TOPICA - Start your own email discussion group. FREE!
>
>
6. Re: listview limit
----- Original Message -----=20
From: <rml at rubis.trix.net>
To: "EUforum" <EUforum at topica.com>
Subject: Re: listview limit
>=20
>=20
> Hi Derek;
>=20
> This is the code:
>=20
>=20
> without type_check
> include Win32Lib.ew
> without warning
> with trace
> --with profile
> =
-------------------------------------------------------------------------=
-------------------------------------
> constant Window1 =3D createEx( Window, "", 0, 0, 0, 0.999, 0.9, 0, 0 )
> constant ListView1 =3D createEx( ListView,=20
> {{"Count",100,0},{"Phrases",2000,0}},Window1,0, 0 ,0.99,=20
> 0.9,or_all({LVS_REPORT,LVS_SHOWSELALWAYS}),0)
>=20
>=20
> sequence texto
> object bla
>=20
> setLVStyle(ListView1, {LVS_EX_CHECKBOXES,LVS_EX_FULLROWSELECT})
> texto=3Drepeat(123456789,30)
> bla =3D addLVItem( ListView1, 0, {sprint(1),sprint(texto)})
> WinMain( Window1,Normal )
>=20
>=20
Ok, it seems that Windows does only display the first 259 characters (in =
my case) of a column. It still contains all the text though. If you add =
these three lines just before the WinMain() call.
texto =3D ""
texto =3D getLVItemText(ListView1,1,2)
setText(Window1, {"Item has %d chars", length(texto)})
You'll see that all the text is still there, just not all of it is =
displayed.
--=20
Derek
7. Re: listview limit
- Posted by rml at rubis.trix.net
Jul 17, 2003
Ok Derek,
so, it's not possible to show in display more than 259 caracters using
listview ?
What you recommend me to use instead of listview ? MleText ?
Thanks,
Rubens
At 11:45 17/7/2003, you wrote:
>
>
>----- Original Message -----
>From: <rml at rubis.trix.net>
>To: "EUforum" <EUforum at topica.com>
>Sent: Thursday, July 17, 2003 11:36 PM
>Subject: Re: listview limit
>
>
> > Hi Derek;
> >
> > This is the code:
> >
> >
> > without type_check
> > include Win32Lib.ew
> > without warning
> > with trace
> > --with profile
> >
>
> --------------------------------------------------------------------------------------------------------------
> > constant Window1 = createEx( Window, "", 0, 0, 0, 0.999, 0.9, 0, 0 )
> > constant ListView1 = createEx( ListView,
> > {{"Count",100,0},{"Phrases",2000,0}},Window1,0, 0 ,0.99,
> > 0.9,or_all({LVS_REPORT,LVS_SHOWSELALWAYS}),0)
> >
> >
> > sequence texto
> > object bla
> >
> > setLVStyle(ListView1, {LVS_EX_CHECKBOXES,LVS_EX_FULLROWSELECT})
> > texto=repeat(123456789,30)
> > bla = addLVItem( ListView1, 0, {sprint(1),sprint(texto)})
> > WinMain( Window1,Normal )
> >
> >
>Ok, it seems that Windows does only display the first 259 characters (in
>my case) of a column. It still contains all the text though. If you add
>these three lines just before the WinMain() call.
>
> texto = ""
> texto = getLVItemText(ListView1,1,2)
> setText(Window1, {"Item has %d chars", length(texto)})
>
>You'll see that all the text is still there, just not all of it is displayed.
>
>--
>Derek
>
>
>
>TOPICA - Start your own email discussion group. FREE!
8. Re: listview limit
----- Original Message -----
From: "Al Getz" <Xaxo at aol.com>
To: "EUforum" <EUforum at topica.com>
Subject: RE: listview limit
>
>
> Derek Parnell wrote:
> >
> >
> > On Thu, 17 Jul 2003 00:34:33 -0300 (07/17/03 13:34:33)
> > , <rml at rubis.trix.net> wrote:
> >
> > >
> > > Hi Derek;
> > >
> > > I'm using listview to show selected frases, and frases bigger than 255
> > > are cut, this is why I asked.
> > > I will do a search for virtual-list.
> > >
> >
> > Sorry, but are you saying that the LENGTH of each line is being
> > restricted
> > to 255 characters? Can you show me code that does this?
> >
> > --
> >
> > cheers,
> > Derek Parnell
> >
>
> Windows Listview control...
>
> I've tested WinChecking up to something like 2048 chars in ONE
> column alone, so i KNOW it goes at LEAST that high 
Al,
is that 2048 VISIBLE characters? I can only get it to DISPLAY the first 259
characters. The column still holds all the text, but only displays the first part
of it.
--
Derek
9. Re: listview limit
----- Original Message -----
From: "Al Getz" <Xaxo at aol.com>
To: "EUforum" <EUforum at topica.com>
Subject: RE: listview limit
[snip]
> So are you in fact using in-place editing then?
Its not my problem; its Rubens that's asking. I'm just reporting what I've found
too.
10. Re: listview limit
----- Original Message -----=20
From: <rml at rubis.trix.net>
To: "EUforum" <EUforum at topica.com>
Subject: Re: listview limit
>=20
>=20
> Ok Derek,
>=20
> so, it's not possible to show in display more than 259 caracters using =
> listview ?
> What you recommend me to use instead of listview ? MleText ?
The recommendation is to use other controls AS WELL AS the listview. =
Such that when a line in the listview gets focus, you display the column =
details in another set of controls (as required) to display and edit the =
listview contents.=20
So, when the column with the long text get focus, use a MleText control =
receive a copy of the long text.=20
--=20
Derek
