What does HRESULT 0x800401C3 (CONVERT10_E_OLESTREAM_BITMAP_TO_DIB) mean?

 
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CONVERT10_E_OLESTREAM_BITMAP_TO_DIB

There was an error in a Windows GDI call while converting the bitmap to a DIB

CONVERT10_E_OLESTREAM_BITMAP_TO_DIB is the failure HRESULT 2147746243 (0x800401C3, signed -2147221053) from winerror.h. AllStat defines it as “There was an error in a Windows GDI call while converting the bitmap to a DIB”. In practical terms, a Windows GDI operation failed while converting an OLE 1 bitmap presentation to a DIB. Interpret it in the context of importing presentation data during OLE 1 to OLE 2 conversion.

The high bit in 0x800401C3 is set, so this is a failure rather than a success or informational result. Its facility field is 4 (FACILITY_ITF) and its low 16-bit code is 451 (0x01C3). Those bit fields classify the value, but they do not identify the failing object by themselves; the native method, object identity, and first producer of CONVERT10_E_OLESTREAM_BITMAP_TO_DIB remain essential.

Contract boundary

Understanding CONVERT10_E_OLESTREAM_BITMAP_TO_DIB requires this subsystem context: OLE 1/OLE 2 conversion combines callback I/O, binary parsing, structured storage, and presentation conversion. For CONVERT10_E_OLESTREAM_BITMAP_TO_DIB, retaining the stage and byte offset is essential because a read failure, format failure, missing stream, and GDI failure require different repairs.

  • Associate CONVERT10_E_OLESTREAM_BITMAP_TO_DIB with one exact operation in OleConvertOLESTREAMToIStorage, OleConvertIStorageToOLESTREAM, OLESTREAM callbacks, structured-storage streams, and presentation-data conversion.
  • Confirm that CONVERT10_E_OLESTREAM_BITMAP_TO_DIB came from importing presentation data during OLE 1 to OLE 2 conversion, rather than from cleanup or a wrapper that ran afterward.
  • Preserve any IErrorInfo, underlying Win32 result, provider message, or callback failure that preceded CONVERT10_E_OLESTREAM_BITMAP_TO_DIB; the HRESULT alone should not erase a more specific cause.

Likely cause branches

  • CONVERT10_E_OLESTREAM_BITMAP_TO_DIB can result when bitmap dimensions, stride, planes, or bit depth are invalid.
  • CONVERT10_E_OLESTREAM_BITMAP_TO_DIB can result when GDI cannot allocate or create the required DIB resources.
  • CONVERT10_E_OLESTREAM_BITMAP_TO_DIB can result when the source bitmap handle or palette is invalid or already released.

Evidence to preserve

A useful CONVERT10_E_OLESTREAM_BITMAP_TO_DIB incident records the conversion direction, OLESTREAM Get or Put callback result, requested byte count, actual byte count, storage class, stream names, presentation format, bitmap or DIB metadata, and commit state. For CONVERT10_E_OLESTREAM_BITMAP_TO_DIB, also retain the application and component build, architecture, process and thread IDs, COM apartment, operation correlation ID, elapsed time, and the first state-changing event before the failure. When logging CONVERT10_E_OLESTREAM_BITMAP_TO_DIB, redact content and credentials while preserving types, lengths, hashes, opaque identities, and lifecycle generations needed to reproduce its contract.

  • For CONVERT10_E_OLESTREAM_BITMAP_TO_DIB, capture BITMAP metadata, palette size, dimensions, and GDI last-error data.
  • For CONVERT10_E_OLESTREAM_BITMAP_TO_DIB, validate multiplication for stride and image size before allocation.
  • For CONVERT10_E_OLESTREAM_BITMAP_TO_DIB, test conversion of the presentation independently from object data.

Diagnostic sequence

  1. Capture CONVERT10_E_OLESTREAM_BITMAP_TO_DIB at the first native return before a wrapper maps it to a generic exception.
  2. Identify the exact object, method, and lifecycle phase involved in importing presentation data during OLE 1 to OLE 2 conversion.
  3. Capture BITMAP metadata, palette size, dimensions, and GDI last-error data.
  4. Validate multiplication for stride and image size before allocation.
  5. Test conversion of the presentation independently from object data.
  6. Reproduce CONVERT10_E_OLESTREAM_BITMAP_TO_DIB with one controlled input or state change, and verify that the correction changes the decisive evidence rather than merely hiding the result.

Recovery and retry

Correction. For CONVERT10_E_OLESTREAM_BITMAP_TO_DIB, repair or omit only the corrupt presentation when the application can preserve object data and clearly records the loss; otherwise fail atomically. Retry boundary. Retry after resource recovery or with valid bitmap data; repeated GDI calls on the same invalid handle are unsafe. Before repeating the CONVERT10_E_OLESTREAM_BITMAP_TO_DIB operation, record stream positions and byte counts, release temporary GDI objects, and discard or roll back any output storage that was only partly written.

Practical scenario

A legacy object has valid storage data but a bitmap with impossible width and stride; the migration tool quarantines the presentation instead of importing corrupted pixels. This isolates CONVERT10_E_OLESTREAM_BITMAP_TO_DIB within OLE 1/OLE 2 storage conversion and provides a regression test for the stated correction.

Difference from related HRESULTs

CONVERT10_E_STG_DIB_TO_BITMAP is the reverse presentation conversion from DIB to bitmap. For CONVERT10_E_OLESTREAM_BITMAP_TO_DIB, keep those outcomes separate in exception mappings, telemetry dimensions, user messages, and automated retry policy.

Developer and administrator guidance

For CONVERT10_E_OLESTREAM_BITMAP_TO_DIB, make OLESTREAM callbacks report exact byte counts, validate format headers before allocating, preserve structured-storage commit boundaries, and separate bitmap from DIB ownership. Regression coverage for CONVERT10_E_OLESTREAM_BITMAP_TO_DIB should include short reads and writes, invalid format records, absent standard streams, truncated presentation data, large dimensions, callback errors, and failure before versus after storage commit.

Operational repair for CONVERT10_E_OLESTREAM_BITMAP_TO_DIB must target the evidence-backed owner: preserve the original document and reproduce with a copy; repair the producing application or converter only after the failing conversion stage and file provenance are identified. Retain before-and-after traces for CONVERT10_E_OLESTREAM_BITMAP_TO_DIB so the change can be attributed and reversed.

References

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