getIconName  
  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).
Return
An icon name
Parameters
iconPos 
Icon position
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).
An icon name
Icon position