checkInvariant close compressedVectorNode dump isOpen write write

bool isOpen ( ) Test whether CompressedVectorWriter is still open for writing. Precondition: The associated ImageFile must be open. Exceptions: E57_ERROR_IMAGEFILE_NOT_OPEN E57_ERROR_INTERNAL All objects in undocumented state See also: SourceDestBufferFunctions.cpp example, CompressedVectorWriter::close, CompressedVectorNode::writer