pub type LPWAVECALLBACK = Option<unsafe extern "stdcall" fn(arg1: HDRVR, arg2: UINT, arg3: DWORD_PTR, arg4: DWORD_PTR, arg5: DWORD_PTR)>;Aliased Type§
pub enum LPWAVECALLBACK {
None,
Some(unsafe extern "stdcall" fn(*mut HDRVR__, u32, u32, u32, u32)),
}