Sending and Receiving Messages

Messages can be sent from one member to one or more other members as follows:

A member sends a message by invoking the IXCMSGOX macro.
The system gives control to the message user routine of the member that is to receive the message and passes the member a parameter list containing information about the message to be received. To receive the message the receiving XCF member must be active and must have provided the appropriate message user routine.
The message user routine invokes the IXCMSGIX macro to receive the message.

Figure 1 illustrates the process of sending and receiving a message. In this figure, MEM1 sends a message to MEM2 in the same XCF group, but on a different system.

Figure 1. Sending a Message from One Member to Another