Re: ComboBox with some entries not selectable or grayed out

[Kjell Ahlstedt <kjell ahlstedt bredband net>]

The attached file shows one way to gray out a row in a combo box. I've 
added a bool column to the TreeModel and connected it to the 
CellRenderer's "sensitive" property.
Search for "//!!". It shows where I've modified the combobox/complex 
example in the gtkmm tutorial.

Kjell

2012-02-16 21:17, Curtis Gedak skrev:
> In gtkmm-3.0, how does one create a combo box that has some entries 
> that are not selectable or grayed out?
>
> To help illustrate the problem I am using the tutorial code for a 
> Combo Box from the following link:
> http://developer.gnome.org/gtkmm-tutorial/unstable/combobox-example-full.html.en 
>
>
> This code creates a combo box with three entries (depicted in text 
> below).
> In this example all three of the entries are selectable.
>
> +---------------------+
> |  1   Billy Bob      |
> +---------------------+
> |  2   Joey Jojo      | <-- I would like this entry to be not 
> selectable/grayed out.
> +---------------------+
> |  3   Rob McRoberts  |
> +---------------------+
>
> I would like to make one or more entries not selectable and grayed out.
>
> From searching the Internet, the closest I have come is to learn that:
>
>    The solution was to pack a Gtk::CellRendererText into the
>    Gtk:ComboBox manually and use set_cell_data_func to set the
>    "sensitive" property of the renderer to false...
>
> Quote above is from the following link:
> http://mail.gnome.org/archives/gtkmm-list/2007-June/msg00148.html
>
> Unfortunately I have been unable to find sample code that demonstrates 
> this ability.
>
> Any help with this challenge would be greatly appreciated.
>
> Sincerely,
> Curtis Gedak
> (Maintainer of GParted)

Attachment: ComboBox_not_selectable.tar.gz
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