Re: Menu Item Factory

[Ralf Heeg <heeg lmr khm de>]

> Subject: Menu Item Factory
> From: Filip Hroch <hroch physics muni cz>
>
> Ciao,
>
> I have some problems with using of menus created by the Gtk Item Factory.
>
> There is a small part of my developing code:
>
> ...
>     { "/_Settings/_Binning", "<control>B", NULL, 0, "<Branch>" },
>     { "/_Settings/_Binning/_3x3", "<control>3", set_bin, 3, "<RadioItem>" },
>     { "/_Settings/_Binning/_2x2", "<control>2", set_bin, 2, "/Settings/Binning/3x3" },
>     { "/_Settings/_Binning/_1x1", "<control>1", set_bin, 1, "/Settings/Binning/3x3" },
> ...
>     { "/_Settings/", NULL, NULL, 0, "<Separator>"},
>     { "/_Settings/Enable _Legend", "<control>L", set_legend, 0, "<ToggleItem>" },
>     { "/_Settings/_Reuse Darks", "<control>R", set_darks, 0, "<ToggleItem>" },
> ...
>
> The meaning of these items is not important. I don't know:
>
> 1) how initialize radio item group to (for example) 2x2 item. The toggled
>    item by this way is 3x3 but I can't initialize some arbitrary item.
>
> 2) how set on the "Enable Legend" toggle button during init phase. I was
>    tried the gtk_item_factory_get_widget/item function to get a toggle button
>    from a item factory but without any success.
>
> 3) why, the choosing of argument 1x1 make 3x calls of set_bin with arguments
>    3,2,1? The set_bin is a void function, is it correct?
>
> Is it possible use the item factory by this way? I can rewrite code
> to use no item factory, but I prefers use of its because the code
> is significantly simpler.
>
> Thank for any suggestions
>
> FH

Also Filip encountered problems with the evergreen GtkItemFactory:

re 2 (maybe also applies to 1):

right after gtk_init:
   
gtk_check_menu_item_set_active(GTK_CHECK_MENU_ITEM(gtk_item_factory_get_item(
            <name of gtkItemFactory variable>, "<main>/_Settings/Enable
_Legend")),
        TRUE);

re 1) the first radio widget is active by default, try above method for
any other one

re 3) of course, the callback func gets called for each widget of a
radio widget group,
may it be active or inactive, the argument values 1,2,3 are prooving
that. Your set_bin-func
can respond to all formerly active and inactive widgets. In set_bin do:

    if(gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(1st param)))
    { ... your code } for new active ones, for new inactive ones
accordingly.

bye

ralf heeg
Lab for Mixed Realities
Cologne, Germany

heeg lmr khm de