Function ui_sys::uiDrawTextLayoutSetColor

pub unsafe extern "C" fn uiDrawTextLayoutSetColor(
    layout: *mut uiDrawTextLayout, 
    startChar: intmax_t, 
    endChar: intmax_t, 
    r: c_double, 
    g: c_double, 
    b: c_double, 
    a: c_double
)