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tt_prequest_create(3)
CDE


NAME
  tt_prequest_create - create a procedure request message

SYNOPSIS
  #include <Tt/tt_c.h>
  Tt_message tt_prequest_create(Tt_scope scope,
				const char *op);

DESCRIPTION
  The tt_prequest_create function creates a message.  The created message
  created contains the following:

	Tt_address = TT_PROCEDURE
	Tt_class = TT_REQUEST

  The application can use the returned handle to add arguments and other
  attributes, and to send the message.

  The scope argument determines which processes are eligible to receive the
  message.  The following values are defined:
  All processes joined to the indicated session are eligible.
  All processes joined to the indicated file are eligible.
  All processes joined to either indicated file or the indicated session are
  eligible.
  All processes joined to both the indicated file and the indicated session
  are eligible.

  The op argument is the operation to be performed by the receiving process.

RETURN VALUE
  Upon successful completion, the tt_prequest_create function returns the
  unique handle that identifies this message.  The application can use
  tt_ptr_error3 to extract one of the following Tt_status values from the
  returned handle: The operation completed successfully.
  The ttsession1 process is not running and the ToolTalk service cannot
  restart it.
  The specified process identifier is out of date or invalid.

APPLICATION USAGE
  The application should use tt_free3 to free any data stored in the address
  returned by the ToolTalk API.

  If the ToolTalk service is unable to create a message when requested,
  tt_prequest_create returns an invalid handle.	 When the application
  attempts to use this handle with another ToolTalk function, the ToolTalk
  service will return TT_ERR_POINTER.

SEE ALSO
  Tt/tt_c.h5, tt_ptr_error3, tt_free3.