Re: threads/treeview

["Richard Warren" <rew primagraphics co uk>]

I don't know if it's related or not but I had a problem with
gdk_threads_init() a while back (see
http://mail.gnome.org/archives/gtk-app-devel-list/2002-February/msg00233.htm
l for more info).

My problem was that if I called gdk_threads_init() I couldn't later create
and show a file-selection dialog in a button-press callback.  It hung when I
tried to show the new widget (i.e. wouldn't respond to anything).  If I
removed the function call then everything was okay.

I never got an answer about this and am currently operating without the call
to gdk_threads_init() with no apparent problems.

Sorry that probably doesn't help much,
Richard.


----- Original Message -----
From: "Slyder" <slyder earendel org>
To: <gtk-app-devel-list gnome org>
Sent: Thursday, March 14, 2002 6:14 PM
Subject: threads/treeview


> I seem to have run amuck of...something. I've pasted a small test program
> below. Take out the call gdk_threads_init() and it works ok. Take out the
> call to gtk_tree_view_insert_column_with_attributes() and it works ok.
> Leave both in and it pops up the window, but wont respond to anything.
> Have I done something foolish? Or have I stumbled across some insidious
> little beastie of a bug? Oh, yes, I have 2.0.0 installed.
>
> --------------------------------
> #include <gtk/gtk.h>
>
> int
> main (int argc, char *argv[])
> {
>   GtkWidget *win, *vbox;
>   GtkTreeStore *model;
>   GtkWidget *view;
>   GtkTreeViewColumn *column;
>   GtkCellRenderer *cell_renderer;
>   int col_off;
>
>   gtk_init (&argc, &argv);
>   g_thread_init (NULL);
>   gdk_threads_init ();
>   win = gtk_window_new (GTK_WINDOW_TOPLEVEL);
>   g_signal_connect(G_OBJECT(win), "delete_event",
G_CALLBACK(gtk_main_quit), NULL);
>   vbox = gtk_vbox_new (FALSE, 1);
>   gtk_container_add (GTK_CONTAINER (win), vbox);
>   model =
>     gtk_tree_store_new (4, G_TYPE_STRING, G_TYPE_POINTER, G_TYPE_BOOLEAN,
> G_TYPE_BOOLEAN);
>   view = gtk_tree_view_new_with_model (GTK_TREE_MODEL (model));
>   gtk_container_add (GTK_CONTAINER (vbox), view);
>   g_object_unref (G_OBJECT (model));
>   cell_renderer = gtk_cell_renderer_text_new ();
>   /* **** this seems to be the line causing it */
>   col_off = gtk_tree_view_insert_column_with_attributes
(GTK_TREE_VIEW(view),
>                                                         -1, "Datasets",
>                                                         cell_renderer,
>                                                         "markup", 0,
NULL);
>   gtk_widget_show_all (win);
>   gdk_threads_enter ();
>   gtk_main ();
>   gdk_threads_leave ();
>   return (0);
> }
>
> --
> Slyder earendel org                  |  "Into the flood again...
> Earendel / <insert here>             |   ...if I would, could you?"
> Sing your dreams, Scream your song   |     --"Would", Alice in Chains
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