Function NSOpenGLGetOption 

pub unsafe extern "C-unwind" fn NSOpenGLGetOption(
    pname: NSOpenGLGlobalOption,
    param: NonNull<i32>,
)

👎Deprecated: OpenGL API deprecated; please use Metal and MetalKit. (Define GL_SILENCE_DEPRECATION to silence these warnings.)

Available on crate feature NSOpenGL and crate feature objc2-open-gl and Apple only.

Safety

param must be a valid pointer.