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<p>Determines vertical size of the viewport. </p>
<dl class="section return"><dt>Returns</dt><dd>Vertical size of the viewport. </dd></dl>

<p>Implements <a class="el" href="classfabgl_1_1_bitmapped_display_controller_ada5f99a696a06cbd96b2b86d1e78878a.html#ada5f99a696a06cbd96b2b86d1e78878a">BitmappedDisplayController</a>.</p>

<p class="definition">Definition at line <a class="el" href="_t_f_t_controller_generic_8h_source.html#l00214">214</a> of file <a class=