ink rectangle to assign to each character
logical rectangle to assign to each character
user data pointer
function to copy @data when the attribute is copied. If %NULL, @data is simply copied as a pointer.
function to free @data when the attribute is freed, or %NULL
Return: the newly allocated #PangoAttribute, which should be freed with pango_attribute_destroy().
ConstructionException GTK+ fails to create the object.
1.8
Like pango_attr_shape_new(), but a user data pointer is also provided; this pointer can be accessed when later rendering the glyph.