LockFile method 
    
      
int
LockFile(
 - Pointer<Void> hFile, 
 
- int dwFileOffsetLow, 
 
- int dwFileOffsetHigh, 
 
- int nNumberOfBytesToLockLow, 
 
- int nNumberOfBytesToLockHigh, 
 
)
      
     
    
    
  Implementation
  int LockFile(
  ffi.Pointer<ffi.Void> hFile,
  int dwFileOffsetLow,
  int dwFileOffsetHigh,
  int nNumberOfBytesToLockLow,
  int nNumberOfBytesToLockHigh,
) {
  return (_LockFile ??=
      _dylib.lookupFunction<_c_LockFile, _dart_LockFile>('LockFile'))(
    hFile,
    dwFileOffsetLow,
    dwFileOffsetHigh,
    nNumberOfBytesToLockLow,
    nNumberOfBytesToLockHigh,
  );
}