hi,
had a look at your situation and can report at least why it's happening:
- the reason that the tooltip is not working in your example is because a
submenu has been added.
if you comment out the gtk_menu_item_set_submenu() (and corresponding
gtk_menu_append() calls), you see that the tooltip works on the "File"
menu item. include the gtk_menu_item_set_submenu() call again and it
stops working.
my conclusion would be, then, that adding a submenu to a menu file item
changes its characteristics such that tooltips are no longer renderable.
though a more in-depth explanation will need to come from someone more
closely involved in gtk+ widget design, not me.
whether this is intended behaviour, i also cannot comment. maybe someone
else would like to?
cheers,
richard
>
> Hi,
> I'm reading a book Sam's teach yourself Gtk+ programming and trying to set
> tooltips for menubar's toplevel menuitem which in this case is file_item.
> the book states that I can set tooltips with gtk_tooltips_set_tip()
> function
> without the use of GtkTipsQuery. I did exactly what it said and it works
> only for menuitem that are enlisted in submenu not for the toplevel
> menuitem
> in menuabar. I checked the api and it said "Tooltips can only be set on
> widgets which have their own X window and receive enter and leave events.
> To
> check if a widget has its own window use GTK_WIDGET_NO_WINDOW()." I tested
> whether file_item(toplevel menuitem) and exit_item(Submenu's menuitem)
> have
> their own window with GTK_WINDOW_NO_WINDOW macro and it tested TRUE for
> both
> of them and still tooltips can be set only for submenu's menuitem and not
> for menubar's top level menuitem. I'm bit confused here. Anyone know what
> should I do or what am I doin' wrong? Thanks.
>
>
> Note: The code I used is listed below.
>
>
>
>
>
>
>
>
> #include <gtk/gtk.h>
>
> #define NONHOMOGENEOUS FALSE
> #define NO_SPACING 0
>
>
>
>
> gboolean delete_handler(GtkWidget *widget, GdkEvent *event, gpointer
> user_data)
> {
> return FALSE;
> }
>
>
> void destroy_handler (GtkObject *object, gpointer user_data)
> {
> gtk_main_quit();
> }
>
>
> int main(int argc, char *argv[])
> {
> GtkWidget *top_window, *vbox, *label;
> GtkWidget *menu_bar, *file_item, *file_menu, *separator, *exit_item;
>
> GtkTooltips *tooltips;
>
> /* 1)Initialize the environement*/
> gtk_init(&argc, &argv);
>
>
>
> /* 2)Create widgets and show attributes*/
> top_window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
> vbox = gtk_vbox_new(NONHOMOGENEOUS, NO_SPACING);
> label = gtk_label_new("GTK+ is fun.");
>
> menu_bar = gtk_menu_bar_new();
> file_item = gtk_menu_item_new_with_label("File");
> file_menu = gtk_menu_new();
> separator = gtk_menu_item_new();
> exit_item = gtk_menu_item_new_with_label("Exit");
>
> tooltips = gtk_tooltips_new();
>
>
>
>
> /* 2b)Show attributes */
> gtk_window_set_title(GTK_WINDOW (top_window), "Test");
> gtk_widget_set_size_request(label, 200, 200);
>
>
> /* 3)Register siganls */
> g_signal_connect(G_OBJECT(top_window), "delete-event",
> G_CALLBACK(delete_handler), NULL);
> g_signal_connect(G_OBJECT(top_window), "destroy",
> G_CALLBACK(destroy_handler), NULL);
> g_signal_connect(G_OBJECT(exit_item), "activate",
> G_CALLBACK(destroy_handler), NULL);
>
>
>
>
>
> /* 4)Create instance hierarchy*/
> gtk_box_pack_start_defaults(GTK_BOX(vbox), menu_bar);
> gtk_box_pack_start_defaults(GTK_BOX(vbox), label);
>
>
> gtk_menu_bar_append(GTK_MENU_BAR(menu_bar), file_item);
>
> gtk_menu_item_set_submenu(GTK_MENU_ITEM(file_item), file_menu);
>
> gtk_menu_append(GTK_MENU(file_menu), separator);
> gtk_menu_append(GTK_MENU(file_menu), exit_item);
> gtk_container_add(GTK_CONTAINER(top_window), vbox);
>
>
>
> /*5)Show widgets*/
> gtk_widget_show(file_item);
> gtk_widget_show(separator);
> gtk_widget_show(exit_item);
>
> gtk_widget_show(menu_bar);
> gtk_widget_show(label);
> gtk_widget_show(vbox);
> gtk_widget_show(top_window);
>
> gtk_tooltips_set_tip(GTK_TOOLTIPS(tooltips), file_item, "Filetoshow",
> NULL);
> gtk_tooltips_set_tip(GTK_TOOLTIPS(tooltips), exit_item, "Exit", NULL);
> gtk_tooltips_set_tip(GTK_TOOLTIPS(tooltips), label, "Exit", NULL);
>
>
> /*6)Process signals*/
> gtk_main();
>
>
> /*7)Quitting*/
> return 0;
> }
>
>
> _______________________________________________
>
> gtk-list@xxxxxxxxx
> http://mail.gnome.org/mailman/listinfo/gtk-list
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