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Enum

BoldMode

How bold is realized. Auto prefers a real bold face and synthesizes only as a fallback.

public static readonly BoldMode Auto = 0

Prefer a real bold face (family cut or variable wght axis); synthesize only when none matches.

public static readonly BoldMode Synthetic = 1

Keep the current real face and synthesize only the positive weight difference needed to reach the target.

public static readonly BoldMode Real = 2

Use a real bold face only; stay at the natural weight when none matches.