cairoUserFontFaceSetUnicodeToGlyphFunc {RGtk2} | R Documentation

## cairoUserFontFaceSetUnicodeToGlyphFunc

### Description

Sets the unicode-to-glyph conversion function of a user-font. See `cairo_user_scaled_font_unicode_to_glyph_func_t` for details of how the callback works.

### Usage

    cairoUserFontFaceSetUnicodeToGlyphFunc(font.face, unicode.to.glyph.func)

### Arguments

``font.face`` | [`CairoFontFace`] A user font face
``unicode.to.glyph.func`` | [cairo_user_scaled_font_unicode_to_glyph_func_t] The unicode_to_glyph callback, or `NULL`

### Details

The font-face should not be immutable or a `CAIRO_STATUS_USER_FONT_IMMUTABLE` error will occur. A user font-face is immutable as soon as a scaled-font is created from it. Since 1.8

### Author(s)

Derived by RGtkGen from GTK+ documentation

[Package RGtk2 version 2.20.40 Index]