Murray Cumming wrote:
> On Tue, 2007-09-11 at 17:17 -0400, Paul Davis wrote:
>
>> On Tue, 2007-09-11 at 17:03 -0400, José Alburquerque wrote:
>>
>>
>>> Any ideas? Thanks so much.
>>>
>> What is an "Element" ? Gtkmm can't handle arbitary types as column
>> template args.
>>
>
> Actually, it can, I think.
>
>
I did read in the programming guide that it can.
>> It can handle pointers and all built-in scalar types, as
>> well as std::string and Glib::ustring, plus a few others.
>>
>
> I think the problem here is indeed that you are using a static instance
> somewhere.
>
>
Your comments are much appreciated, thank you. :-) When you say a
static instance, are you referring to one of my "Element" derived
classes or are you referring to the TreeModelColumnRecord class I've
defined (columns) which *is* static within my "DVDProject" class? Would
changing the "staticity" of this static member help?
On another note, can I pick your brain a bit more and ask you a little
about how gtkmm handles inheritance? As I had mentioned, all the
objects I work with are derived from a base class (which I call
"Element") with a virtual method called "getName()" designed to return a
string naming the object I'm dealing with (so I can "render" the string
in the TreeView). I've overridden the method in various derived
classes, but in a rendering method (which I set up with the
TreeView::Column::set_cell_data_func()) when I call the object's
"getName()" method, it's overridden method is not called, but instead
the base class method is called. Am I missing something? If it helps
the short TreeView initialization and the rendering method I use
follows. I'd really appreciate any insights. Thanks for your comments.
-Jose
MainWindow::MainWindow() {
...
TreeView::Column* outlineColumn = manage(new TreeView::Column("Outline",
DVDProject::columns.element));
CellRenderer* renderer = outlineColumn->get_first_cell_renderer();
outlineColumn->set_cell_data_func(*renderer,
sigc::mem_fun(*this, &MainWindow::renderElement));
outlineTreeView.append_column(*outlineColumn);
...
show_all_children();
}
void MainWindow::renderElement(CellRenderer* renderer,
const TreeModel::iterator& iter) {
CellRendererText* textRenderer =
dynamic_cast<CellRendererText*>(renderer);
const Element& e = (*iter)[DVDProject::columns.element];
textRenderer->property_text() = e.getName();
}
_______________________________________________
gtkmm-list mailing list
[email protected]
http://mail.gnome.org/mailman/listinfo/gtkmm-list
