UserFontFace.setRenderGlyphFunc

Sets the glyph rendering function of a user-font. See cairo_user_scaled_font_render_glyph_func_t for details of how the callback works. 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. The render_glyph callback is the only mandatory callback of a user-font. If the callback is NULL and a glyph is tried to be rendered using font_face, a CAIRO_STATUS_USER_FONT_ERROR will occur. Since 1.8

class UserFontFace
void
setRenderGlyphFunc
(
cairo_user_scaled_font_render_glyph_func_t renderGlyphFunc
)

Parameters

renderGlyphFunc cairo_user_scaled_font_render_glyph_func_t

The render_glyph callback, or NULL