Avoid wasted enumeration of all row heights if the selection is on the header column for which the function is expected to return -1 (at the end of the enumeration). When dealing with large sets (several thousands lines) - the response time for tree sorting through column click is unreasonable due to this enumeration.
Avoid wasted enumeration of all row heights if the selection is on the header column for which the function is expected to return -1 (at the end of the enumeration). When dealing with large sets (several thousands lines) - the response time for tree sorting through column click is unreasonable due to this enumeration.