THotPDF.ApplyVerticalSubstitutionFeatures Method
Applies OpenType vertical-writing GSUB substitution features (such as vert/vrt2) to a Unicode run before vertical text layout
Declaration
function ApplyVerticalSubstitutionFeatures(const Wide: UnicodeString): UnicodeString;Unit
HPDFDoc
Parameters
| Name | Purpose |
|---|---|
Wide | Unicode text run to substitute |
Return value
Unicode text with vertical-form glyph substitutions applied
Usage notes
- Used internally by the vertical text-layout pipeline ahead of shaping and positioning
- Fonts without vertical substitution features return the input unchanged