ich will be be displayed. Example : "kCLine + kGLine" will displayed C and G line. "kNoLine" doesn't display any line. "kAutoLines" adjust line display according to piano roll pitch range (automatic possibilities : no line, C line, C and G line, chromatic scale, diatonic scale);.  <a href="#ga1aee4b96bc2c1e13ee00840da330b48d"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__Errors.html#gaca62da9cddc3c9ab9b21ff9b450a2469">GuidoErrCode</a>&#160;</td><td cla