Type Alias PFNGLWINDOWPOS4DVMESAPROC 

pub type PFNGLWINDOWPOS4DVMESAPROC = Option<unsafe extern "C" fn(v: *const GLdouble)>;

Aliased Type

pub enum PFNGLWINDOWPOS4DVMESAPROC {
    None,
    Some(unsafe extern "C" fn(*const f64)),
}

Variants

None

No value.

Some(unsafe extern "C" fn(*const f64))

Some value of type T.