Returns a blob that represents a range of bytes in parent. The new
blob is always created with #HB_MEMORY_MODE_READONLY, meaning that it
will never modify data in the parent blob. The parent data is not
expected to be modified, and will result in undefined behavior if it
is.
Returns a blob that represents a range of bytes in
parent. The new blob is always created with #HB_MEMORY_MODE_READONLY, meaning that it will never modify data in the parent blob. The parent data is not expected to be modified, and will result in undefined behavior if it is.Makes
parentimmutable.