Type Alias LPMMIOPROC 

pub type LPMMIOPROC = Option<unsafe extern "stdcall" fn(arg1: LPSTR, arg2: UINT, arg3: LPARAM, arg4: LPARAM) -> LRESULT>;

Aliased Type

pub enum LPMMIOPROC {
    None,
    Some(unsafe extern "stdcall" fn(*mut i8, u32, i32, i32) -> i32),
}

Variants

None

No value.

Some(unsafe extern "stdcall" fn(*mut i8, u32, i32, i32) -> i32)

Some value of type T.