enumerateChildren
Gets the requested information about the files in a directory. The result is a #GFileEnumerator object that will give out #GFileInfo objects for all the files in the directory.
The @attributes value is a string that specifies the file attributes that should be gathered. It is not an error if it's not possible to read a particular requested attribute from a file - it just won't be set. @attributes should be a comma-separated list of attributes or attribute wildcards. The wildcard "" means all attributes, and a wildcard like "standard::" means all attributes in the standard namespace. An example attribute query be "standard::*,owner::user". The standard attributes are available as defines, like %G_FILE_ATTRIBUTE_STANDARD_NAME. %G_FILE_ATTRIBUTE_STANDARD_NAME should always be specified if you plan to call g_file_enumerator_get_child() or g_file_enumerator_iterate() on the returned enumerator.
If @cancellable is not null, then the operation can be cancelled by triggering the cancellable object from another thread. If the operation was cancelled, the error %G_IO_ERROR_CANCELLED will be returned.
If the file does not exist, the %G_IO_ERROR_NOT_FOUND error will be returned. If the file is not a directory, the %G_IO_ERROR_NOT_DIRECTORY error will be returned. Other errors are possible too.
Return
A #GFileEnumerator if successful, null on error. Free the returned object with g_object_unref().
Parameters
an attribute query string
a set of #GFileQueryInfoFlags
optional #GCancellable object, null to ignore