Retrieves the icon name used for the icon.
%NULL is returned if there is no icon or if the icon was set by some other method (e.g., by GdkPaintable or gicon).
Icon position
An icon name
See Implementation
Retrieves the icon name used for the icon.
%NULL is returned if there is no icon or if the icon was set by some other method (e.g., by GdkPaintable or gicon).