Обсуждение: ComboBox for FK columns in EditGrid
Hi,
In searching for what to add next to PgAdmin, I saw that the PgAdmin TODO list has listed ComboBoxes in ForeignKey columns as one of its requirements.
Is anyone working on it ?
I would want to give it a try if I could understand wxWidgets a little bit more.
And for that, any recommendations as to which control to use ?
Should I use wxVListBox (in case the list is large) or simply use wxListView and warn for large lists ? Or any other ?
Robins
In searching for what to add next to PgAdmin, I saw that the PgAdmin TODO list has listed ComboBoxes in ForeignKey columns as one of its requirements.
Is anyone working on it ?
I would want to give it a try if I could understand wxWidgets a little bit more.
And for that, any recommendations as to which control to use ?
Should I use wxVListBox (in case the list is large) or simply use wxListView and warn for large lists ? Or any other ?
Robins
On Feb 13, 2008 4:33 PM, Robins Tharakan <tharakan@gmail.com> wrote: > Hi, > > In searching for what to add next to PgAdmin, I saw that the PgAdmin TODO list has listed ComboBoxes in ForeignKey columnsas one of its requirements. > > Is anyone working on it ? > I would want to give it a try if I could understand wxWidgets a little bit more. > You mean in the edit grid as selectable values? Sure, go for it. > And for that, any recommendations as to which control to use ? > Should I use wxVListBox (in case the list is large) or simply use wxListView and warn for large lists ? Or any other ? wxComboxBox would seem more appropriate - list boxes are not really an appropriate control from a UI perspective. You will need to give some though to how the data will be populated, especially when there are a lot of rows on the child table. I would consider using a single source of data for each column, and maybe list 50 rows at a time, but add a pseudo-option as the last item which, if selected, will grab the next 50 rows. Use a cursor to get the data (might be a good time to think about adding cursor support to pgSet), and cache it so we only have to get it once when the form is loaded. Sounds like a fun little project actually... -- Dave Page EnterpriseDB UK: http://www.enterprisedb.com The Oracle-compatible database company