Input_Item_Codes

 

MAIL$_MESSAGE_BACK

   When you specify Boolean item code MAIL$_MESSAGE_BACK,
   MAIL$MESSAGE_INFO reads the identification number of the current
   message and returns the preceding message.

   Specify the value 0 in the buffer length and buffer address
   fields of the item descriptor.

   Do not specify MAIL$_MESSAGE_BACK, MAIL$_MESSAGE_ID, and MAIL$_
   MESSAGE_NEXT in the same call to MAIL$MESSAGE_INFO.
 

MAIL$_MESSAGE_ID

   MAIL$_MESSAGE_ID specifies the message identification number of
   the message on which the operation is to be performed. The buffer
   address field of the item descriptor points to a longword that
   contains the message identification number.

   Do not specify MAIL$_MESSAGE_BACK, MAIL$_MESSAGE_ID, and MAIL$_
   MESSAGE_NEXT in the same call to MAIL$MESSAGE_INFO.
 

MAIL$_MESSAGE_NEXT

   When you specify the Boolean item code MAIL$_MESSAGE_NEXT,
   MAIL$MESSAGE_INFO reads the message identification number of
   the current message and returns the message that follows it.

   Specify the value 0 in the buffer length and buffer address
   fields of the item descriptor.

   Do not specify MAIL$_MESSAGE_BACK, MAIL$_MESSAGE_ID, and MAIL$_
   MESSAGE_NEXT in the same call to MAIL$MESSAGE_INFO.
 

out_item_list

   OpenVMS usage:itmlst_3
   type:         longword
   access:       write only
   mechanism:    by reference
   Item list specifying the information you want the routine to
   return. The out_item_list argument is the address of a list of
   item descriptors, each of which describes an item of information.
   The list of item descriptors is terminated by longword value of
   0.