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0x000005A5

ERROR_NON_MDICHILD_WINDOW

Cannot process a message from a window that is not a multiple document interface (MDI) window.

win32decimal 1445

Matched as: the code as given (hex)

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Source: System Error Codes (1300-1699) - Win32 apps · CC-BY-4.0 (MicrosoftDocs/sdk-api, repo license verified 2026-10-09) · retrieved 2026-10-09