Re: [Gtk2hs-users] TreeDemo crash

[Axel S. <Axe...@en...>]

On Feb 12, 2009, at 18:16, Peter Hercek wrote:

> Jian Fan wrote:
>> I have a program using tree view and crash if I enable search. I  
>> found
>> the TreeDemo program has the same problem. I'm using XP and gtk2hs
>> 0.10.0 and ghc 6.10.1. I just run TreeDemo.exe and then press any  
>> key:
>>
>> C:\Gtk2Hs\demos\treeList>TreeDemo.exe
>>
>> (TreeDemo.exe:5384): GLib-GObject-WARNING **: gtype.c:3940: type  
>> id `0' is inval
>> id
>>
>> (TreeDemo.exe:5384): GLib-GObject-WARNING **: can't peek value  
>> table for type `<
>> invalid>' which is not currently reference
>
> It may be worth to check whether it is not the same problem as this  
> one:
>
> http://permalink.gmane.org/gmane.comp.lang.haskell.gtk2hs/1273
>
> Let us know whether it was the same.
>

There is a demo in demo/treeList/TreeSort.hs which demonstrates how  
to warp a model into a TreeModelSortable together with setting up  
column numbers to associate the sort columns to sorting functions.

That said, SortColumnId's are quite different to ColumnId's. The  
first are plain numbers that are meant to create an association  
between columns and sorting functions. The latter are more complex  
number that associate a number with an extraction function. The  
problems you're seeing relate to ColumnId's. Could you send us your  
code?

Axel.