Specifies an @accel_group to add the menu items accelerator to
(this only applies to stock items so a stock item must already
be set, make sure to call gtk_image_menu_item_set_use_stock()
and gtk_menu_item_set_label() with a valid stock item first).
If you want this menu item to have changeable accelerators then
you shouldnt need this (see gtk_image_menu_item_new_from_stock()).
Specifies an @accel_group to add the menu items accelerator to (this only applies to stock items so a stock item must already be set, make sure to call gtk_image_menu_item_set_use_stock() and gtk_menu_item_set_label() with a valid stock item first).
If you want this menu item to have changeable accelerators then you shouldnt need this (see gtk_image_menu_item_new_from_stock()).