Re: GTK app without gtk_main() valid?

[Chris Vine <chris cvine freeserve co uk>]

On Sat, 2007-10-06 at 12:12 -0400, Andrew Smith wrote:
> Hi
>
> I accidentally learned that it's possible to have a working GTK 
> application without a call to gtk_main():
>
> int main()
> {
>      GtkWidget* mainDialog;
>      int rc;
>
>      gtk_init(&argc, &argv);
>
>      /* main window */
>      mainDialog = gtk_message_dialog_new(NULL, GTK_DIALOG_MODAL,
>               GTK_MESSAGE_QUESTION, GTK_BUTTONS_NONE,
>               _("some question"));
>      gtk_window_set_title(GTK_WINDOW(mainDialog), "question?");
>      gtk_dialog_add_buttons(GTK_DIALOG(mainDialog),
>                             _("yes"), GTK_RESPONSE_OK,
>                             _("no"), GTK_RESPONSE_CANCEL,
>                             NULL);
>
>      rc = gtk_dialog_run(GTK_DIALOG(mainDialog));
>
>      if(rc == GTK_RESPONSE_OK)
>      {
>          //do something
>      }
>
>      return 0;
> }
>
> This works fine except I don't see the dialog in the taskbar or the tast 
> switcher. That's my first question - can I still only use a GtkDialog or 
> do I need to make a GtkWindow to have it show up in the taskbar?
>
> And the second question - is there anything obviously wrong with not 
> calling gtk_main()?

You have not called gtk_widget_show_all().

gtk_dialog_run() calls gtk_main_loop_new() and gtk_main_loop_run()
itself (it creates a nested main loop), which is what gtk_main() would
(amongst other things) do, so in this simple case it should work.

Chris