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<h1 class="topictitle1">Example: Display messages from IBM-supplied commands more than once</h1>
<div><p>This example shows how to define and create a command that re-displays
messages.</p>
<div class="section"> <p>The <span class="cmdname">Clear Output Queue (CLROUTQ)</span> command issues
the completion message CPF3417, which describes the number of entries deleted,
the number not deleted, and the name of the output queue. If the <span class="cmdname">Clear
Output Queue (CLROUTQ)</span> command is run within a CPP, the message
is still issued but it becomes a detailed message because it is not issued
directly by the CPP. For example, if a user-defined <span class="cmdname">Clear Output
Queue (CLROUTQ)</span> command was issued from the Programmer Menu, the
message would not be displayed. You can, however, receive an IBM<sup>®</sup> message and
reissue it from your CPP.</p>
<p>For example, you create a command named CQ2
to clear the output queue QPRINT2.</p>
<p>The command definition statements
for the CQ2 command are: </p>
<pre>CMD PROMPT ('Clear QPRINT2 output queue')</pre>
<p>The <span class="cmdname">Create Command (CRTCMD)</span> command is:
</p>
<pre>CRTCMD CMD(CQ2) PGM(CQ2)</pre>
<p>The CPP, which receives the completion message and displays
it, is as follows: </p>
<pre>PGM /* Clear QPRINT2 output queue CPP */
DCL &MSGID TYPE(*CHAR) LEN(7)
DCL &MSGDTA TYPE(*CHAR) LEN(100)
CLROUTQ QPRINT2
RCVMSG MSGID(&MSGID) MSGDTA(&MSGDTA) MSGTYPE(*COMP)
SNDPGMMSG MSGID(&MSGID) MSGF(QCPFMSG) MSGDTA(&MSGDTA) MSGTYPE(*COMP)
ENDPGM</pre>
<p>The MSGDTA length for message CPF3417 is 28 bytes. However,
by defining the variable &MSGDTA as 100 bytes, the same approach can be
used on most messages because any unused positions are ignored.</p>
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<div class="parentlink"><strong>Parent topic:</strong> <a href="exdcc.htm" title="This contains examples of defining and creating commands.">Examples: Define and create commands</a></div>
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<div class="relinfo"><strong>Related information</strong><br />
<div><a href="../cl/crtcmd.htm">Create Command (CRTCMD) command</a></div>
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