_lwrite

The _lwrite function writes data to the specified file. This function is provided 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,  // pointer to buffer for data to be written
  UINT uBytes       // number of bytes to write
);
 

Parameters

hFile

Handle to the specified file.

lpBuffer

Pointer to a buffer that contains the data to write to the file.

uBytes

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.

See Also

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