Return the current column number within the input stream.
Declared in <balxml_reader.h>
virtual
int
getColumnNumber() const = 0;The current column number is the number of characters since the last newline was read by the reader plus one, i.e., the first column of each line is column number one. Return 0 if not available. Note that a derived-class implementation is not required to count columns and may just return 0.
the current column number, or 0 if not available