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Ước lượng chỉ mục từ đang được đọc cho các engine nói không báo vị trí từ

Syntax

function EstimateSpokenWordIndex(const Words: TPdfWordBoxes; ElapsedMs: Cardinal; WordsPerMinute: Integer): Integer;

Words	`TPdfWordBoxes` - Words in the chunk currently being spoken
ElapsedMs	`Cardinal` - Milliseconds elapsed since the current chunk started speaking
WordsPerMinute	`Integer` - Estimated speech rate, or 0 to use the default 175 WPM

Zero-based word index, or -1 khi phạm vi rỗng hoặc lịch ước lượng đã kết thúc

The helper budgets the whole range as one word per 60000 / WordsPerMinute milliseconds

Each word receives a share of that budget proportional to its text length plus a small inter-word pause weight

API names, type names, file names, and PDF terms keep their original spelling so code search remains reliable
TPdfReadingSession.Tick uses this helper when EstimatePacing is enabled

WordIndex := EstimateSpokenWordIndex(Words, ElapsedMs, 175);
if WordIndex >= 0 then
PdfView1.SetReadingWord(Words[WordIndex]);