Function CGContextSetAllowsFontSubpixelPositioning 

pub extern "C-unwind" fn CGContextSetAllowsFontSubpixelPositioning(
    c: Option<&CGContext>,
    allows_font_subpixel_positioning: bool,
)

👎Deprecated: renamed to CGContext::set_allows_font_subpixel_positioning

Available on crate feature CGContext only.