Image Button in Dialogue

[uahmed <gleam uahmed gmail com>]

Hi

I am new to gtk , i want to make a notification so i choosed the GTK Dialouge , My dialouge will have 2 buttons , now can you tell me how to putt image on buttons as i cant find any functions in below address .

http://developer.gnome.org/gtk/2.24/GtkDialog.html

it do give me option of

gtk_dialog_add_buttons 

gtk_dialog_new_with_buttons

but not with image .