BOOL WriteFile(
  HANDLE hFile,                    // handle to file
  LPCVOID lpBuffer,                // data buffer
  DWORD nNumberOfBytesToWrite,     // number of bytes to write
  LPDWORD lpNumberOfBytesWritten,  // number of bytes written
  LPOVERLAPPED lpOverlapped        // overlapped buffer
);
 

 
DECLARE INTEGER WriteFile IN kernel32;
    INTEGER   hFile,;
    INTEGER   lpBuffer,;
    INTEGER   nBt2Write,;
    INTEGER @ lpBtWritten,;
    INTEGER   lpOverlapped