gtk-widget-path-iter-sibling-index (path pos)

path -- a gtk-widget-path instance
pos -- an integer with the position to get the sibling index for, -1 for the path head

An unsigned integer with the index into the list of siblings for the element at pos.

Returns the index into the list of siblings for the element at pos as returned by the gtk-widget-path-iter-siblings function. If that function would return nil because the element at pos has no siblings, this function will return 0.