.. meta::
    :description: Message Flow

Message Flow
============

This section presents the message flow of Dragonfly.

The flow of messages rely on these mechanisms:

- Qt key/mouse event, analyzed by the actions mechanism (plugins), to execute commands (see :func:`ORSServiceClass.decorators.infrastructure.action`);
- callbacks (from object model, C++ library), to Qt event queue, calling on functions (see :ref:`callbacks`);
- state dictionary of entities (managed by :class:`OrsLibraries.workingcontext.WorkingContext`), to plugins declaring an interest on that entity (see :func:`ORSServiceClass.decorators.infrastructure.interest`);

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