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TPC_E_NOT_RELEVANT
Meaning
Windows documents TPC_E_NOT_RELEVANT as “TabletPC inking error code. The data required for the operation was not supplied”. In practical terms, it is returned when a Tablet PC operation lacks the particular ink, context or recognition data required for that operation.
Evidence to collect
- Capture 1: requested operation and exact required data set.
- Capture 2: stroke count, packet properties and recognition-context configuration.
- Capture 3: context-node type or plug-in stage receiving the call.
Where the failure belongs
This result belongs to Tablet PC ink, stylus and recognition. Tablet PC APIs span device enumeration, RealTimeStylus packet queues, ink-object lifetime and recognizer-specific capabilities. The numerical facility does not identify which Tablet PC layer produced the result. The relevant condition is that a Tablet PC operation lacks the particular ink, context or recognition data required for that operation.
Likely causes
- Possible cause 1: the selected strokes do not contain the requested property.
- Possible cause 2: recognition context was not supplied with ink or guide data.
- Possible cause 3: the operation is valid only for another context-node or input type.
Diagnostic sequence
- Confirm that the observed path matches this condition: a Tablet PC operation lacks the particular ink, context or recognition data required for that operation.
Correct handling and retry
- Corrective action 1: check applicability before invoking the operation.
- Corrective action 2: supply the documented data in the required order.
- Corrective action 3: treat absence as a branch in the feature contract rather than fabricating placeholder data.
Retry guidance. Retry only after relevant data has been added or a different applicable operation is selected. When retrying, avoid replay stale strokes, reorder stylus packets or reuse an invalid recognizer context.
Difference from nearby HRESULTs
TPC_E_INVALID_PROPERTY identifies a property lookup problem; it says the broader data needed for the operation was not supplied.
Developer and operational guidance
Practical scenario
A gesture analysis step runs on an empty stroke collection after filtering removed all ink; skipping analysis prevents it.
Official Microsoft references
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