_lwrite

The _lwrite function writes data to the specified file.

Note  This function is provided only for compatibility with 16-bit versions of Windows. Win32-based applications should use the WriteFile function.

UINT _lwrite(
  HFILE hFile,      // handle to file
  LPCSTR lpBuffer,  // write data buffer
  UINT uBytes       // number of bytes to write
);

Parameters

hFile

[in] Handle to the specified file.

lpBuffer

[in] Pointer to a buffer that contains the data to write to the file.

uBytes

[in] Specifies the number of bytes to be written to the file.

Return Values

If the function succeeds, the return value indicates the number of bytes actually written to the file.

If the function fails, the return value is HFILE_ERROR. To get extended error information, call GetLastError.

If you are attempting to write to a floppy drive that does not have a floppy disk, the system displays a message box prompting the user to retry the operation. To prevent the system from displaying this message box, call the SetErrorMode function with SEM_NOOPENFILEERRORBOX.

Requirements

  Windows NT/2000: Requires Windows NT 3.1 or later.
  Windows 95/98: Requires Windows 95 or later.
  Header: Declared in Winbase.h; include Windows.h.
  Library: Use Kernel32.lib.

See Also

File I/O Overview, File I/O Functions, _lread, SetErrorMode, WriteFile