calculateBorders clone DxfBlock getAngle getBlockHandle getBlockName getInsertPoint getIsInsert getScale isEndBock m_Angle m_BlockHandle m_BlockName m_InsertPoint m_IsEndBlock m_IsInsert m_Scale setBlockHandle setBlockName setIsEndBlock setIsInsert ~DxfBlock

clone() virtual DxfEntity * clone ( ) overridevirtual 纯虚函数, 拷贝对象 重载 DxfEntityContainer .