Type Alias windows_sys::Win32::Media::Audio::LPMIDICALLBACK
pub type LPMIDICALLBACK = Option<unsafe extern "system" fn(hdrvr: HDRVR, umsg: u32, dwuser: usize, dw1: usize, dw2: usize)>;
Aliased Type§
enum LPMIDICALLBACK {
None,
Some(unsafe extern "system" fn(_: *mut c_void, _: u32, _: usize, _: usize, _: usize)),
}