1. COMBO ADDITEM limit
- Posted by rubis at fem.unicamp.br Nov 12, 2002
- 460 views
Hi; Is there a limit to the maximum number of entries (additem) in the combo(ex) box ? I'm thinking in add itens from a edb database to the list. thanks Rubens
2. Re: COMBO ADDITEM limit
- Posted by brachoy at pdvsa.com Nov 12, 2002
- 452 views
I think you can add 32767 entries in a combo box... Greetings Yamil *************** PDVSA´S INTERNET E-MAIL USE *************** This message may contain information solely of the interest of PDVSA or its businesses. Copying, distribution, disclosure or any use of the information contained in this transmission is permitted only to authorized parties. If you have received this e-mail by error, please destroy it and notify webmaster at pdvsa.com or the sender by reply email. ****** USO DEL CORREO ELECTRONICO DE PDVSA HACIA INTERNET ****** Esta nota puede contener informacion de interes solo para PDVSA o sus negocios. Solo esta permitida su copia, distribucion o uso a personas autorizadas. Si recibio esta nota por error, por favor destruyala y notifique al remitente o a webmaster at pdvsa.com.
3. Re: COMBO ADDITEM limit
- Posted by Derek Parnell <ddparnell at bigpond.com> Nov 12, 2002
- 459 views
A Combo is a poor choice for a user interface item if it has a large quantity of information. The primary purpose of a Combo is to enable users to select a specific item from a list while taking up only a small amout of screen space. The larger the list the harder it is to select a specific item in it. It simply takes too long to scroll through. Small lists are easier to use. Instead of selecting database items from a list of all records, it is often better to allow the user to filter the database records in order to create a smaller list. So you might like to add a text box next to the combo that the user can enter a filter mask and then build the combo list that matches the filter mask. There are many different ways to present filtering to a user, this is only one way. The reason we are programming GUI code is to make life easier for the users of our programs. ---------------- cheers, Derek Parnell ----- Original Message ----- From: <rubis at fem.unicamp.br> To: "EUforum" <EUforum at topica.com> Sent: Wednesday, November 13, 2002 3:20 AM Subject: COMBO ADDITEM limit > > Hi; > > Is there a limit to the maximum number of entries (additem) in the > combo(ex) box ? > I'm thinking in add itens from a edb database to the list. > > > thanks > > Rubens > > > >
4. Re: COMBO ADDITEM limit
- Posted by rubis at fem.unicamp.br Nov 12, 2002
- 453 views
Hi Derek; My ideia is the use of the first letter typed in the combo box as a parameter filter. After the user types "R", for example, the list is populated with "Romario", "Ronaldo" ... from the database. Do you have a better idea ? Thanks, Rubens At 17:12 12/11/2002, you wrote: > >A Combo is a poor choice for a user interface item if it has a large >quantity of information. > >The primary purpose of a Combo is to enable users to select a specific item >from a list while taking up only a small amout of screen space. The larger >the list the harder it is to select a specific item in it. It simply takes >too long to scroll through. Small lists are easier to use. > >Instead of selecting database items from a list of all records, it is often >better to allow the user to filter the database records in order to create a >smaller list. So you might like to add a text box next to the combo that the >user can enter a filter mask and then build the combo list that matches the >filter mask. There are many different ways to present filtering to a user, >this is only one way. > >The reason we are programming GUI code is to make life easier for the users >of our programs. > >---------------- >cheers, >Derek Parnell >----- Original Message ----- >From: <rubis at fem.unicamp.br> >To: "EUforum" <EUforum at topica.com> >Sent: Wednesday, November 13, 2002 3:20 AM >Subject: COMBO ADDITEM limit > > > > Hi; > > > > Is there a limit to the maximum number of entries (additem) in the > > combo(ex) box ? > > I'm thinking in add itens from a edb database to the list. > > > > > > thanks > > > > Rubens > > > > > >
5. Re: COMBO ADDITEM limit
- Posted by rubis at fem.unicamp.br Nov 12, 2002
- 440 views
Thanks Yamil, I will use no more then 1000 in the worst case. So , I think it's ok. Rubens At 15:30 12/11/2002, you wrote: > > >I think you can add 32767 entries in a combo box... > >Greetings > >Yamil > > >*************** PDVSA=B4S INTERNET E-MAIL USE *************** >This message may contain information solely of the interest of PDVSA or >its businesses. Copying, distribution, disclosure or any use of the >information contained in this transmission is permitted only to >authorized parties. If you have received this e-mail by error, please >destroy it and notify webmaster at pdvsa.com or the sender by reply email. > >****** USO DEL CORREO ELECTRONICO DE PDVSA HACIA INTERNET ****** >Esta nota puede contener informacion de interes solo para PDVSA o sus >negocios. Solo esta permitida su copia, distribucion o uso a personas >autorizadas. Si recibio esta nota por error, por favor destruyala y >notifique al remitente o a webmaster at pdvsa.com. > > >
6. Re: COMBO ADDITEM limit
- Posted by Derek Parnell <ddparnell at bigpond.com> Nov 12, 2002
- 456 views
The only criteria is "Is it easy for the user to use?" If this will cause the combo to have an "easy-to-use" number of items in its list then fine. 13/11/2002 9:33:50 AM, rubis at fem.unicamp.br wrote: > >Hi Derek; > > My ideia is the use of the first letter typed in the combo box as >a parameter filter. > After the user types "R", for example, the list is populated with >"Romario", "Ronaldo" ... from the database. > Do you have a better idea ? > >Thanks, >Rubens > > >At 17:12 12/11/2002, you wrote: >> >>A Combo is a poor choice for a user interface item if it has a large >>quantity of information. >> >>The primary purpose of a Combo is to enable users to select a specific item >>from a list while taking up only a small amout of screen space. The larger >>the list the harder it is to select a specific item in it. It simply takes >>too long to scroll through. Small lists are easier to use. >> >>Instead of selecting database items from a list of all records, it is often >>better to allow the user to filter the database records in order to create a >>smaller list. So you might like to add a text box next to the combo that the >>user can enter a filter mask and then build the combo list that matches the >>filter mask. There are many different ways to present filtering to a user, >>this is only one way. >> >>The reason we are programming GUI code is to make life easier for the users >>of our programs. >> >>---------------- >>cheers, >>Derek Parnell >>----- Original Message ----- >>From: <rubis at fem.unicamp.br> >>To: "EUforum" <EUforum at topica.com> >>Sent: Wednesday, November 13, 2002 3:20 AM >>Subject: COMBO ADDITEM limit >> >> >> > Hi; >> > >> > Is there a limit to the maximum number of entries (additem) in the >> > combo(ex) box ? >> > I'm thinking in add itens from a edb database to the list. >> > >> > >> > thanks >> > >> > Rubens >> > >> > > > > --------- Cheers, Derek Parnell ICQ# 7647806
7. Re: COMBO ADDITEM limit
- Posted by petelomax at blueyonder.co.uk Nov 12, 2002
- 460 views
{{{ On Tue, 12 Nov 2002 14:30:07 -0400, brachoy at pdvsa.com wrote:
I think you can add 32767 entries in a combo box...
but that would be a *really* stupid thing to do. Try hard to keep any selection list under 20 and try harder still to keep them under 50. Above that they a) take forever to load, and b) are nigh on impossible to actually use.
Pete