Return the current line number within the input stream. The current line is the last line for which the reader has not yet seen a newline. Lines are counted starting at one from the time a stream is provide to open. Return 0 if not available. Note that a derived-class implementation is not required to count lines and may just return 0.
Declared in <balxml_minireader.h>
virtual
int
getLineNumber() const override;