Pango.Layout.get_unknown_glyphs_count

### Method

# Pango Layoutget_unknown_glyphs_count

#### Declaration [src]

    int
    pango_layout_get_unknown_glyphs_count (
      PangoLayout* layout
    )

#### Description [src]

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.

Available since: | 1.16

#### Return value

Returns: | `int`
| The number of unknown glyphs in `layout`.