Re: which number a GtkTreeViewColumn is in a GtkTreeView

[ginxd <ginxd btopenworld com>]

Razvan wrote:

> I have a GtkListStore with 1 column. Data in this column are pointers 
> to a structure MyStruct.
>
> Then, I have a GtkTreeView with 4 column. Text displayed in this 
> columns comes from MyStruct from the model.
>
> So I use 
> gtk_tree_view_column_set_cell_data_func(column,renderer,someGtkTreeCellDataFunc_cb,NULL,NULL) 
>
> for each GtkTreeViewColumn.
>
> but in
> void someGtkTreeCellDataFunc_cb(GtkTreeViewColumn *tree_column, 
> GtkCellRenderer *cell, GtkTreeModel *tree_model,GtkTreeIter 
> *iter,gpointer data)
>
> I need to know the number of tree_column to know what member of 
> MyStruct to put there.
>
> I have looked through the API but I didn't find anything.
>
> If you have any sugestions I appreciate.


Might I suggest, you use some of the tips from the examples given.  When 
creating the column, set the information you need, e.g.:

 g_object_set_data (G_OBJECT (renderer), "column", (gint *)col);

Where col is the number.  You should then be able to use 
g_object_get_data()... to get the information at any point.
Note: I think that there is a better way of sending the col, e.g.:

 g_object_set_data (G_OBJECT (renderer), "column", GINT_TO_POINTER(col));

and

 gpointer p = g_object_get_data (G_OBJECT (renderer), "column");
 col = GPOINTER_TO_INT(p);


Hope this helps.
Regards,
Martyn