[gtkmm] Problems with setting toolbar icon size

[Jaroslaw Mroczek <jaroslaw mroczek wp pl>]

Hi

I have some problem with setting size of the toolbar on GTKmm 2.4. 
Previous version had method set_icon_size() defined in Toolbar class. I 
got really confused when after spending about an hour I found that there 
is no more set_icon_size() in GTKmm and probably in GTK+ 2.4 as well. 
There is still get_icon_size() but I couldn't find set.. one.

Is there anyone here who can tell me how can I set the size of my 
tollbar items ? (And why someone removed that method ??)

Thanks in advance

RedBull