Explanation of TDBLookupListBox
lazarus / 16-Databases

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bruce.button · 2016-05-30 09:15

Can anyone point me to a simple explanation of how to use a
TDBLookupListBox?

Thank you

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Thaddy · 2016-05-30 10:03

Quote from: bruce.button on May 30, 2016, 11:15:35 amCan anyone point
me to a simple explanation of how to use a TDBLookupListBox?

Thank you

Simply look at the docs or the delphi docs:
http://docwiki.embarcadero.com/RADStudio/XE6/en/Displaying_and_Editing
_Data_in_Lookup_List_and_Combo_Boxes

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Zoran · 2016-05-30 10:06

1. TDBLookupListBox is similar to TDBLookupComboBox, so wiki page
might help you: http://wiki.freepascal.org/dblookupcombobox

2. Then, I found this -
http://www.festra.com/wwwboard/messages/1767.html

3. Search the forum for dblookup:There are many questions about using
DBLookupListBox and DBLookUpComboBox. Perhaps you can figure out what
you need by reading these topics...

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Thaddy · 2016-05-30 10:12

Basically what it does is this:

You can present the user with a set of pre-defined choices, where you,
the programmer, have full control over. This is foremost to prevent
the user of making an invalid  look-up query in most circumstances.
But it is also convenience to the user to present him/her with
valid/validated options. You can load these options from a database
itself, but that is not strictly necessary.

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bruce.button · 2016-05-30 15:39

Thank you for the helpful comments! I think those links will help me
to sort it out.