*this is column-major, then there must not exists any nonzero coefficient of coordinates i x col such that i >= row. Otherwise the matrix is invalid.*this. use ToElement. Return the handle as a TiXmlElement. This may return null.
use ToElement. Return the handle as a TiXmlElement. This may return null.
use ToNode. Return the handle as a TiXmlNode. This may return null.
use ToNode. Return the handle as a TiXmlNode. This may return null.
use ToText() Return the handle as a TiXmlText. This may return null.
use ToText() Return the handle as a TiXmlText. This may return null.
use ToUnknown() Return the handle as a TiXmlUnknown. This may return null.
use ToUnknown() Return the handle as a TiXmlUnknown. This may return null.
1.7.1