[Java-gnome-developer] [TreeView] How to know which DataColumn is used by a TreeViewColumn ?

[Mehdi R. <meh...@gm...>]

Hi everyone,
I have seen that I didn't CC the mail to the list.
Since I'm always stuck I'll appreciate any help ^^

---------- Forwarded message ----------
From: Mehdi Rabah <meh...@gm...>
Date: Jun 6, 2006 9:59 AM
Subject: Re: [Java-gnome-developer] [TreeView] How to know which DataColumn
is used by a TreeViewColumn ?
To: Andrew Cowie <an...@op...>

Hi Andrew,


> view.addListener(new TreeViewListener() {
>         public void treeViewEvent(TreeViewEvent event) {
>                 if (event.getType() == TreeViewEvent.Type.ROW_ACTIVATED) {
>                         TreeIter pointer = event.getTreeIter();
>                         Blah b = (Blah) model.getValue(pointer,
> blahObject_DataColumn);


In fact I wanted to know how do you choose and get this
blah_Object_DataColumn.
The Listener that I use is in a class in a different package (it contains a
lot of code).
I can make the two class aware of each others and write getters, but...


> > But to get a value with the ListStore.getValue() I also need the
> > DataColumn behind the TreeViewColumn, and I don't know how to get it.
>
> The bad way to do it is to get ask the TreeViewEvent for the TreeModel
> and ask the TreeModel for the DataColumn[], and then for the 5th
> DataColumn, say dataColArry[4] or whatever.


Which is the method to use to get this array? I didn't find it.

A much better way to do it is to have a field for each DataColumn as
> private members of your class. Then you've got all the DataColumns
> available by name, and you just use them.
>

In fact my real problem is not to get the columns, it is to know which is
the
 dataColumn  behind the  TreeViewColumn clicked (it's the title of my mail
^^)

I want to know the cell (x,y) clicked - I have the TreeIter (x) and I want
the DataColumn (y).
I only have the TreeViewColumn (y but for view, not data), how to get the
DataColumn behind this ??