OnDraw" ref="ga667929f2c4ec92b716c975f21663c1d7" args="(PianoRoll *pr, int width, int height, VGDevice *dev)" -->
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          <td class="memname"><a class="el" href="group__Errors.html#gaca62da9cddc3c9ab9b21ff9b450a2469">GuidoErrCode</a> GuidoPianoRollOnDraw </td>
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          <td class="paramtype">PianoRoll *&#160;</td>
          <td class="paramname"> <em>pr</em>, </td>
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