If string is null-terminated, then length should be -1.
If length is not -1, then it is the length of string.
If there is an error parsing string then the program will be
aborted. You should not attempt to parse user interface description
from untrusted sources.
Parses the UI definition in string.
If string is null-terminated, then length should be -1. If length is not -1, then it is the length of string.
If there is an error parsing string then the program will be aborted. You should not attempt to parse user interface description from untrusted sources.