Hello IBOlers,

I have a master table which contains a key field linked to a lookup
table via a TIB_LookupCombo. When the key field in the master table
contains NULL the LookupCombo shows an empty value. That's ok.

When the key field in the master table contains a value, how can I
remove the lookup key value from my master table? The LookupCombo
shows only valid records from the lookup table. Is there any
possibility to display a configurable text (i.e. "<none>") in the
LookupCombo which inserts NULL into the master's table key field when
the user selects it?

Thanks,
Mario