Function winapi::um::fileapi::LockFileEx

pub unsafe extern "system" fn LockFileEx(
    hFile: HANDLE, 
    dwFlags: DWORD, 
    dwReserved: DWORD, 
    nNumberOfBytesToLockLow: DWORD, 
    nNumberOfBytesToLockHigh: DWORD, 
    lpOverlapped: LPOVERLAPPED
) -> BOOL