HRESULT 0x8898500B (DWRITE_E_FLOWDIRECTIONCONFLICTS): meaning

Status / error code:		Category:

Constant name:
Source:		Operating System:
Description: The flow direction conflicts with the reading direction. They must be perpendicular to each other.

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DWRITE_E_TEXTRENDERERINCOMPATIBLE	DWRITE_E_NOCOLOR

DWRITE_E_FLOWDIRECTIONCONFLICTS

DWRITE_E_FLOWDIRECTIONCONFLICTS means that the selected flow direction and reading direction are geometrically incompatible. DirectWrite requires the axes to be perpendicular: for ordinary horizontal reading, text lines flow vertically; for vertical reading, text lines flow horizontally.

Diagnose the layout settings together

Log both DWRITE_READING_DIRECTION and DWRITE_FLOW_DIRECTION at the point where the text format or layout is created.
Do not infer direction from the locale alone: DirectWrite documentation notes that reading direction is an explicit layout setting.
Check style inheritance and UI mirroring code, which can override one direction after the other has been configured.

Correct response

Choose a perpendicular pair appropriate to the writing system and presentation. Reversing only paragraph alignment or text alignment is not a substitute; those settings control placement along the existing axes rather than repairing an invalid pair of axes.

Microsoft: DWRITE_FLOW_DIRECTION · Microsoft: DWRITE_READING_DIRECTION

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