Connection Mixin¶

Handles COM connection lifecycle: connect, disconnect, reconnect, and application detection.

adapters.mixins.connection_mixin.ConnectionMixin ¶

Mixin for connection management.

connect(only_if_running: bool = False) -> bool

Connect to the CAD application via COM, initializing COM for this thread.

Tries to attach to an already-running instance first. If none is found and only_if_running is False, launches a new instance.

PARAMETER	DESCRIPTION
`only_if_running`	When True, return False instead of launching a new CAD instance if none is currently running. TYPE: `bool` DEFAULT: `False`

RETURNS	DESCRIPTION
`bool`	True if the connection was established successfully.

RAISES	DESCRIPTION
`CADConnectionError`	If COM initialization fails or the ProgID is invalid.

disconnect() -> bool

Disconnect from CAD application with COM cleanup.

is_connected() -> bool

Check if connected to CAD application.

check_document_change() -> bool

Check if the active document in the CAD application has changed. If it has, update self.document to the new active document.

RETURNS	DESCRIPTION
`bool`	True if the document changed, False otherwise. TYPE: `bool`