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System/390 assembler invocation

         CALL MQGET,(HCONN,HOBJ,MSGDESC,GETMSGOPTS,BUFFERLENGTH,       X
               BUFFER,DATALENGTH,COMPCODE,REASON)

Declare the parameters as follows:

HCONN         DS       F      Connection handle
HOBJ          DS       F      Object handle
MSGDESC       CMQMDA   ,      Message descriptor
GETMSGOPTS    CMQGMOA  ,      Options that control the action of MQGET
BUFFERLENGTH  DS       F      Length in bytes of the BUFFER area
BUFFER        DS       CL(n)  Area to contain the message data
DATALENGTH    DS       F      Length of the message
COMPCODE      DS       F      Completion code
REASON        DS       F      Reason code qualifying COMPCODE

 

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