Function ImFont_RenderText 

pub unsafe extern "C" fn ImFont_RenderText(
    this: *mut ImFont,
    draw_list: *mut ImDrawList,
    size: f32,
    pos: *const ImVec2,
    col: ImU32,
    clip_rect: *const ImVec4,
    text_begin: *const c_char,
    text_end: *const c_char,
    wrap_width: f32,
    cpu_fine_clip: bool,
)