Eventbuilder callback bundle

DESCRIPTION

State machine callback bundles are a mechanism to hook actions to specific state transitions in the ReadoutGUI. The Event builder implements a callback bundle that, when registered will automatically do what is needed to manage the event builder without any further programmatic intervention from your ReadoutCallouts.tcl code.

The useEventBuilder command exported by the evbrdocallouts package registers this callback bundle with the Readout GUI's state machine. EVBC::configure allows you to configure the event builder options. All of the options described in the EVBC::initialize manpage are supported.

The startEVBSources proc is hook that you can use to start your event sources using EVBC::startRingSource. It will be called as needed by the callback bundle. HOWEVER, it is _NOT_ the preferred way to start your ring sources. Rather, you should use EVBC::registerRingSource to create the ring sources.