The XLL Plus library provides a number of C++ header files for use in writing Excel add-ins. The classes and definitions contained in the header files have been designed to simplify the use of Excel programming objects, but only a subset is needed by programmers building the standard run of add-in functions.
The table below summarises the C++ header files available in the library.
| File | Description |
|---|---|
| xllplus.h | The core objects of the library. |
| xlldate.h | Date classes and functions. |
| xlfuncs.h | Classes containing static methods for calling Excel worksheet and macro functions. |
| xlpexcept.h | Exception classes. |
| xlpevents.h | Event classes. |
| xlpconvert.h | Classes and functions that validate user input. |
| xlserialize.h | Classes that support serialization and cacheing of Excel data types. |
| xlpcom.h | Classes and functions for using Excel's OLE automation interface. |
| xllfinder.h | A utility class for searching and replacing cells in Excel spreadsheets. |
| xldialog.h | Classes for displaying and controlling Excel native dialogs. |
| xlmenu.h | A class for creating user-defined menus in Excel. |
| xltoolbar.h | A class for creating user-defined toolbars in Excel. |
| xllres.h | String resource functions. |
| plemtx.h | Template classes for storing and manipulating two-dimensional data arrays. |
| xlhandle.h | Classes and templates for storing C++ objects and accessing them from worksheet cells by their numeric "handle". |
| xlpclrconvert.h | Functions that help with conversion to and from Common Language Runtime types. |
| xlpclrforms.h | A class to help with invoking the Common Language Runtime Forms library. |
| cpplog.h | A self-contained logging framework modelled on log4j and log4cxx. |
| xlvaluelistconstraint.h | A constraint on an input value, such that it must be a member of a specific set of values. |
| xlwizexui.h | Classes that extended the user interface of the Excel Formula Wizard. |
| xllrtdfeedserverproxy.h | Classes that enable real-time data to be returned to Excel from add-in functions. |