[gtkmm] Button question

[Benoît Touron <B Touron citb bull net>]

Hello there !

I need to create a button containing an stock image (built in GTK), like 
Gtk::Stock::CANCEL.
If I pass Gtk::Stock::CANCEL to the button's constructor, then the 
button contains the image AND the text (cancel).
How can I avoid the button to display the text ?

Thanks
Ben