getUnknownGlyphsCount

open fun getUnknownGlyphsCount(): <Error class: unknown class>

Counts the number of unknown glyphs in @layout.

This function can be used to determine if there are any fonts available to render all characters in a certain string, or when used in combination with %PANGO_ATTR_FALLBACK, to check if a certain font supports all the characters in the string.

Return

The number of unknown glyphs in @layout

Since

1.16