Re: [wxperl-users] Associating data with listctrl items

[Mattia B. <mb...@ds...>]

You forgot platform & wxPerl version, so I won't give you the solution ;-p

> I have got a wxPerl application that contains a Wx::TreeCtrl and a
> Wx::ListCtrl. Whenever a Wx::TreeCtrl item is activated, new items
> are inserted in the list control. The "items" are stored as
> data in the tree control.
> 
> I am attempting to supply a hashref as data for each item in the
> list control. So, in my EVT_TREE_SEL_CHANGED callback function
> I have the following code:
 
<snip>

> Adding the actual *items* works fine (they display properly in the list).
> The only problem is that setting the item data simply *does not work*.
> Bizarrely, whenever I print out $id in the above function, it is
> *always* zero.
> 
> Anyway in my EVT_LIST_ITEM_ACTIVATED callback function I have:
> 
> my $file_details = $object->{list}->GetItemData($event->GetItem());
>
> but this causes a message box to appear saying:
> 
> "Cannot retrieve information for list control item XXXXXXXX" (i.e. it
> includes the item number).
I see; this: the problem is that GetItemData takes the index of the item
$list->GetItemData( $ebent->GetIndex() ), or $event->GetData() works fine

> I think the problem is that there is no SetPlData etc. for listctrl like
> there is for treectrl. The C++ documentation seems to show that
> a listctrl item can only have a 'long' associated with it.
Yes, you can use the long as an index in an array ( or in an hash ) containing
the hashrefs, though.

> How can I associate a hashref with each item in a listctrl and how I
> can access this hashref when the item is "activated"?
See above

HTH
Mattia