Greetings. I'm trying to find a sensible approach to dealing with NULL values, combos, and database values. It's of course a valid situation where a database field has a NULL value. It's also valid that someone wants to SET a database field to NULL, by "somehow" de-selecting a currently selected item in a combo. How do I do this? :) There are a few approaches that come to mind ... 1) Is there an easy way for a user to *de-select* a selected item in a combo? I don't see any way of doing this currently, but if there *was* such a way, my problem would be solved. I'm having difficulty connecting to signals like the button press event and populate-popup event ( maybe combos don't have this ). Right-clicking the combo and clicking an item 'de-select' might be ok, though not really obvious. 2) I've tried adding to the combo's model an initial row. All my combo models have at least 2 columns - the ID and the text to be displayed. So if I add an initial row with both the ID and text columns set to NULL ( undef - I'm using perl - whatever ) ... I actually get the desired effect ( both in setting and getting values between combo & DB ), but I also get warnings: Use of uninitialized value in list assignment at /usr/local/lib64/perl5/5.20.1/Gtk3.pm line 1572. Argument "" isn't numeric in subroutine entry at /usr/local/lib64/perl5/5.20.1/x86_64-linux-thread-multi/Glib/Object/Introspection.pm line 58. ... which is not really ideal. I don't think it's safe to use any other values - 0, for example, might be a valid ID from the database. Other than the issue of the STDOUT looking bad, is this a bad idea for any other reason? Maybe there are some other approaches that aren't occurring to me. Thoughts? Dan _______________________________________________ gtk-list mailing list gtk-list@xxxxxxxxx https://mail.gnome.org/mailman/listinfo/gtk-list
