Function acmDriverOpen
pub unsafe extern "system" fn acmDriverOpen(
phad: *mut HACMDRIVER,
hadid: HACMDRIVERID,
fdwopen: u32,
) -> u32
pub unsafe extern "system" fn acmDriverOpen(
phad: *mut HACMDRIVER,
hadid: HACMDRIVERID,
fdwopen: u32,
) -> u32