Re: GtkCellRenderer: start editing with an initial value

[Matthias Clasen <mclasen redhat com>]

On Thu, 2005-02-17 at 19:56 +0100, Murray Cumming wrote:
> Is there any way to make a GtkCellRendererText start editing, while also
> specifying what text it should start with.
> gtk_treeview_set_cursor_on_cell() can start the editing, but first it
> puts the data from the tree model in the CellRenderer.
> 
> I want to do this in my GtkCellRendererText::edited signal handler so
> that I can ask the user to edit the text again until it passes
> validation. I'd like the user to start the second editing with the bad
> text from the first edit, without ever putting the bad text in the
> model.
> 
> I tried doing some of what gtk_treeview_set_cursor_on_cell() does,
> including the strange cell_background, and cell_area stuff, but I'm not
> sure what to pass for the widget parameter of
> gtk_cell_renderer_start_editing():
> http://developer.gnome.org/doc/API/2.0/gtk/GtkCellRenderer.html#gtk-
> cell-renderer-start-editing
> 
> gtk_treeview_set_cursor_on_cell() seems to eventually get that widget
> from the private gtk_tree_view_column_cell_process_action() function,
> but I'm lost there.
> 


You can use the GtkCellRenderer::editing-started signal which was
introduced exactly to allow such setup to happen on the editable.

Matthias