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<TITLE>int v24QueryErrno</TITLE>
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<H2>int <A HREF="#DOC.DOCU">v24QueryErrno</A></H2><H2>( v24_port_t* port )</H2>
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<H2>Documentation</H2>
<BLOCKQUOTE>If possible, all functions return the result of the operation as return
code. Some function don't do this. Therefore, the last error code could be
retrieved with this function.
<P>For example: <TT>v24Read</TT> reports an error by returning a <TT>-1</TT>. To get the
exact error code, the application can call <TT>v24QueryErrno</TT>.
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<DL><DT><DT><B>Parameters:</B><DD><B>port</B> - pointer to handle of the opened port.
<BR><DT><B>Returns:</B><DD> the last error code as <TT>V24_*</TT> constant.
<BR><DD></DL><P><P><I><A HREF="index.html">Alphabetic index</A></I></P><HR>
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