When an icon looked up in the icon theme was not available, the
icon theme may use fallback icons - either those specified to
gtk.icon_theme.IconTheme.lookupIcon or the always-available
"image-missing". The icon chosen is returned by this function.
If the icon was created without an icon theme, this function
returns null.
Get the icon name being used for this icon.
When an icon looked up in the icon theme was not available, the icon theme may use fallback icons - either those specified to gtk.icon_theme.IconTheme.lookupIcon or the always-available "image-missing". The icon chosen is returned by this function.
If the icon was created without an icon theme, this function returns null.