76 lines
4.4 KiB
HTML
76 lines
4.4 KiB
HTML
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<meta name="abstract" content="This example shows how to define and create a command that re-displays messages." />
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<meta name="description" content="This example shows how to define and create a command that re-displays messages." />
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<meta name="DC.subject" content="displaying, message, QUAL (Qualifier) statement, example, Qualifier (QUAL) statement, qualified name, example of defining for command" />
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<title>Example: Display messages from IBM-supplied commands more than once</title>
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<body id="msgcd"><a name="msgcd"><!-- --></a>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">Example: Display messages from IBM-supplied commands more than once</h1>
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<div><p>This example shows how to define and create a command that re-displays
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messages.</p>
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<div class="section"> <p>The <span class="cmdname">Clear Output Queue (CLROUTQ)</span> command issues
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the completion message CPF3417, which describes the number of entries deleted,
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the number not deleted, and the name of the output queue. If the <span class="cmdname">Clear
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Output Queue (CLROUTQ)</span> command is run within a CPP, the message
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is still issued but it becomes a detailed message because it is not issued
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directly by the CPP. For example, if a user-defined <span class="cmdname">Clear Output
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Queue (CLROUTQ)</span> command was issued from the Programmer Menu, the
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message would not be displayed. You can, however, receive an IBM<sup>®</sup> message and
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reissue it from your CPP.</p>
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<p>For example, you create a command named CQ2
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to clear the output queue QPRINT2.</p>
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<p>The command definition statements
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for the CQ2 command are: </p>
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<pre>CMD PROMPT ('Clear QPRINT2 output queue')</pre>
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<p>The <span class="cmdname">Create Command (CRTCMD)</span> command is:
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</p>
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<pre>CRTCMD CMD(CQ2) PGM(CQ2)</pre>
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<p>The CPP, which receives the completion message and displays
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it, is as follows: </p>
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<pre>PGM /* Clear QPRINT2 output queue CPP */
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DCL &MSGID TYPE(*CHAR) LEN(7)
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DCL &MSGDTA TYPE(*CHAR) LEN(100)
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CLROUTQ QPRINT2
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RCVMSG MSGID(&MSGID) MSGDTA(&MSGDTA) MSGTYPE(*COMP)
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SNDPGMMSG MSGID(&MSGID) MSGF(QCPFMSG) MSGDTA(&MSGDTA) MSGTYPE(*COMP)
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ENDPGM</pre>
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<p>The MSGDTA length for message CPF3417 is 28 bytes. However,
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by defining the variable &MSGDTA as 100 bytes, the same approach can be
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used on most messages because any unused positions are ignored.</p>
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</div>
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</div>
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<div>
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<div class="familylinks">
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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>
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<div class="relinfo"><strong>Related information</strong><br />
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<div><a href="../cl/crtcmd.htm">Create Command (CRTCMD) command</a></div>
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</div>
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</div>
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