Attilio Fiandrotti wrote:
> Hi
>
> In an application i add many items to a ListStore and make it scroll on
> the fly to the default option row, like this
>
> for (i = 0; i < NUMBER_OF_ITEMS; i++) {
> gtk_list_store_append (store, &iter);
> gtk_list_store_set (store, &iter, MY_COLUMN, mystrings[i], -1);
> if (default_option_index == i) {
> path = gtk_tree_model_get_path(model, &iter);
> gtk_tree_view_scroll_to_cell (GTK_TREE_VIEW(view), path, NULL,
> FALSE, 0.5, 0);
> gtk_tree_view_set_cursor (GTK_TREE_VIEW(view), path, NULL, FALSE);
> gtk_tree_path_free (path);
> }
> }
>
> Later i pack the TreeView into proper box hierarchy and eventually show
> the gtkwindow and within contained widgets.
>
> Now, scrolling works inconsistently, as the row gets indeed selected but
> the scrolling is only "partial".
> I wonder if this is because i'm attempting to scroll to a row in a
> treeview which has not been realized yet.
> In the case, does performing scroll after widget realization, from
> within a proper callback, will solve this issue?
I eventually managed this by scrolling the treeview from a callback that
gets fired after the expose event is fired.
In order to have scrolling performed only the first time expose event is
fired, i use a global flag which i reset from inside the callback the
first time it's run.
I now would like to know if there is a way to run a signal handler only
once and without using a second signal handler or global flags.
thanks
Attilio
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