d)); }</div><div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;    <span class="keyword">virtual</span> <span class="keywordtype">void</span> drawLine (<span class="keyword">const</span> LinePair&amp; line) = 0;   </div><div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;    <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="class_v_s_t_g_u_i_1_1_c_draw_context.html#a7de847ee867ded887bc0e6607b3692c5">drawLines