Type Alias GEOSMessageHandler 

pub type GEOSMessageHandler = Option<unsafe extern "C" fn(fmt: *const c_char, ...)>;

Aliased Type

pub enum GEOSMessageHandler {
    None,
    Some(unsafe extern "C" fn(*const u8, ...)),
}

Variants

None

No value.

Some(unsafe extern "C" fn(*const u8, ...))

Some value of type T.