Function winapi::um::winspool::EnumPortsA

pub unsafe extern "system" fn EnumPortsA(
    pName: LPSTR, 
    Level: DWORD, 
    pPort: LPBYTE, 
    cbBuf: DWORD, 
    pcbNeeded: LPDWORD, 
    pcReturned: LPDWORD
) -> BOOL