Retrieves the source filename, or %NULL if none is set. The filename is not a copy, and should not be modified or expected to persist beyond the lifetime of the icon source.
Deprecated: Use #GtkIconTheme instead.
Return: image filename. This string must not be modified or freed.
See Implementation
Retrieves the source filename, or %NULL if none is set. The filename is not a copy, and should not be modified or expected to persist beyond the lifetime of the icon source.