The `Signal' method


Argument: Any
Result: None

Valid for: System and APL (child task) object

The Signal method allows the child task to send a message to the parent, and vice versa. It is used in conjunction with the onSignal event, as follows:

In both cases, the Signal method optionally takes an argument, which can be any APL array (or an APLX overlay created using ŚOV). This is typically used to send a command to the other task, or to return a result to it. Any argument to the Signal method is available to the receiving task as the ŚWARG system variable during the execution of the callback.

See the section on APLX Multi-tasking for more details.


Topic: APLX Help : System Classes : Methods : Signal
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