pub type PFNGLDEBUGMESSAGECALLBACKARBPROC = Option<unsafe extern "C" fn(callback: GLDEBUGPROCARB, userParam: *const c_void)>;Aliased Type§
enum PFNGLDEBUGMESSAGECALLBACKARBPROC {
None,
Some(unsafe extern "C" fn(_: Option<unsafe extern "C" fn(_: u32, _: u32, _: u32, _: u32, _: i32, _: *const i8, _: *const c_void)>, _: *const c_void)),
}